Find and join an
Airstream discussion forum. There are
specific paint removers for removing the lacquer off old Airstream trailers that
won't also turn the aluminum gray like an acid wheel cleaner does to aluminum wheels.
It's faster and more effective to chemically remove the lacquer paint, especially around all the intricate areas like the windows, than it is to try to compound it off with a rotary buffer.
So strip the paint off first and then polish the metal.
Any place there's a protruding edge of some type will be a potential place to catch your buffing pad on when using a rotary buffer, other than that it should be pretty straightforward and definitely get a pad cleaner as your pads re going to get really dirty.