On the other hand.... Mine has been done for going on three years in the Florida sun. No yellowing, no peeling. I applied 8 coats to the entire coach. Fiberglass, stickers, even the plastic front end parts and back bumper. It's reported that it can change the color of the stickers but mine were pretty bad so I did them. They look great now
It's all in beautiful shape and I haven't waxed or polished in 30 months. I have put on a top coat at about the year marks.
The flat metal on the rear bumper will occasionally get milky when water stands on it but after it dries it goes clear again.
Would never go back to wax!