Airports In infinite flight

We currently do not know anything about these features and I believe that the Infinite Flight Dev team is working on other things other than cabin crew, and ground activity at the moment.

If you would like to see 3D buildings vote for the feature here!

For Cabin Crew related things you can check out third party applications.

Other than that I recommend you check out A Beginner's Guide to the Forums as this type of thread is really unnecessary.