Correct - the hanger can only accommodate the biplane. That having been said, in order to accommodate the other aircraft too the hangar would have to be huge, with an enormous footprint, and a substantially increased parts count. As a result, I'd estimate a price up to double the current RRP which I suspect few of the target market would pay. LEGO therefore got the size of the hanger right IMHO.
Bag 7 finished off the front facade adds in a metal detector and the baggage check-in station.  I guess you enter from the right and then maybe the revolving doors are where you can walk out to the plane.  I'm not really sure anymore.  The conveyor belt is a nice addition to the set for playability and is set up so you can pull the baggage cart right next to it.  
Parking capacity at Copenhagen Airport was greatly expanded in 2015 with the construction of a new lot as one of the first phases in an ambitious airport expansion plan scheduled to roll out in the coming decades. There are several lots: those near the terminals are very expensive, while the further-flung ones are cheaper (but have free shuttle bus service to the terminals).
This was bought for my son's 5th birthday. If your kid likes to really play with the sets like mine does (not just bought for building it) be aware that the door of the airplane likes to pop off if it is not opened/closed just the right way with gentle hands. My son is a typical rambunctious boy and is not great at opening/closing things gingerly, so the door presents a bit of a problem for him. He doesn't have the dexterity or patience to snap the two tiny joint pieces onto the little pole just so yet, so whenever the door comes off he gets frustrated and needs help. Which is fine, we help him and he will eventually learn to do it himself, but just wanted to make y'all aware of this in case you have someone who is picky about the door opening and closing easily/correctly :) I know some little ones get fussy about these things!
Lego Games launched in 2009, was a series of Lego-themed board games designed by Cephas Howard and Reiner Knizia[77][78] in which the players usually build the playing board out of Lego bricks and then play with Lego-style players. Examples of the games include "Minotaurus", in which players roll dice to move characters within a brick-build labyrinth, "Creationary", in which players must build something which appears on a card, or "Ramses Pyramid", in which players collect gems and climb up a customisable pyramid. Like many board games, the games use dice. In Lego Games, the dice are Lego, with Lego squares with symbols on Lego studs on the dice, surrounded by rubber. The games vary from simple to complex, some are similar to "traditional" board games, while others are completely different.[79]
The capabilities of the Mindstorms range have now been harnessed for use in Iko Creative Prosthetic System, a prosthetic limbs system designed for children. Designs for these Lego prosthetics allow everything from mechanical diggers to laser-firing spaceships to be screwed on to the end of a child's limb. Iko is the work of the Chicago-based Colombian designer Carlos Arturo Torres, and is a modular system that allows children to customise their own prosthetics with the ease of clicking together plastic bricks. Designed with Lego's Future Lab, the Danish toy company's experimental research department, and Cirec, a Colombian foundation for physical rehabilitation, the modular prosthetic incorporates myoelectric sensors that register the activity of the muscle in the stump and send a signal to control movement in the attachment. A processing unit in the body of the prosthetic contains an engine compatible with Lego Mindstorms, the company's robotics line, which lets the wearer build an extensive range of customised, programmable limbs.[54][55]

I purchased this set the day it was released for my LEGO City, as an upgrade from my previous airport (10159 Airport from 2004). First off, the build is great and although it's not very challenging, it's exciting to see the plane come to life and the use of the big plane pieces (eg. the nose, the wings, the tail etc.) was new to me, though I know there have been a number of planes in the past that use these pieces. There are 4 instruction booklets (2 for the plane, one for the airport, and one for the luggage/fuel/stairs car), 8 numbered bags, and two separate bags with the bigger pieces in. This makes the build very easy to follow. The completed set is very grand (especially the plane) in scale, and great looking. It's nice to see that a different colour scheme been used for the plane as opposed to the usual red and white or blue and white colours as seen in previous sets. The plane is HUGE, with a wingspan of around 2 32-wide baseplates (bare this in mind if you want to make a runway). However, despite its huge size, the inside of the plane is very bare. There are 5 seats for the passengers, another one facing backwards which I presume is for the cabin crew (although there isn't a cabin crew minifigure, which would have been a nice addition), and two seats in the cockpit. There's a tiny bathroom at the back of the plane, and a small galley area at the front with a sink and cupboard. There's easily room for a sixth chair in the plane, which I think should have been included, and the space within the plane could've been arranged better to fully optimise the area. The airport terminal has a very nice modern look, and includes the revolving door, tower, waiting area, security scanner and check in desk with luggage conveyor. Although this sounds like a lot of features, the inside of the terminal is, again, very bare and the space could've been used better. There are only 4 seats in the waiting area, and a lot of the space is taken up by the revolving door. The operational conveyor belt for the luggage is a nice touch, though, and there is a fair bit of playability within. The service car is a nice addition to this set and gives it more playability. All the trailers (fuel, stairs and luggage) connect together and attach to the service car, which has a really cool "follow me" sign on the back. This is a really nice addition to the set. Overall, I really like this set because of how it looks and because there's plenty of opportunity for play, but I think a lot more thought could've gone into maximising the space within the plane and the airport. Some more minifigures would have been good, such as a member of the cabin crew, a check-in clerk and a security officer. The value for money is okay with this set, as you do get a lot of big pieces, but the bare interiors are a little disappointing for the price you pay.

Compared to other major European hub airports, like Charles de Gaulle or Heathrow, CPH has a similar number of connections, but is much smaller in both actual size and passenger volumes, and can provide a calmer, more pleasant experience. Its location in the south of Scandinavia makes reaching most European destinations reasonable, and flying to destinations in the Baltic region and in Eastern Europe generally only takes half the time as from major hub airports in Western Europe.