TV Mount

Any mount should work. Yes, you will have to make allowances for mounting it. RV walls are thin. You might look at a locking swing arm mount that you could mount to a cabinet end. I wouldn't trust any fasteners such as expansion bolts. You can use a stud finder to find a structural member. If it is an interior wall, the "studs" are undersized and not standard spacing. The outside structural members might be aluminum and more secure. I'm sure that someone with more knowledge will chime in.

Good luck and welcome aboard.