There's so much to see and do at the bust city airport. Planes are coming and going, and need to refuel and repair. Passengers can check in and pick up their luggage from the conveyor belt. And the control tower oversees the whole operation.
The junior lego sets are easy to build, and have more solid bases, so you can fly your airplane without the wings falling off. But they are the same size as regular legos and will fit with other lego sets.