I don't RV camp necessarily to be outside, although I do spend quite some time outside, hence I own a toyhauler, but I RV camp to get away from home and the routine.
I have two TV's in mine.
Mounting a TV won't void any major warranty. Only problem I forsee is if the TV fell and maybe put a hole in the floor...that's probably not a warranty problem. However if you mount right and sturdy I don't see why it would fall off anyways.
2015 Palomino Puma Unleashed 351-THSS 37' Toyhauler
2013 F-250 Lariat CCSB FX4 Kodiak Brown Metallic w/18k Superglide hitch and Air Lift rear air ride
"Just put that hammer down and give it hell" -Jerry Reed