I sold our Alpenlite about 3 years ago and polished and waxed it with Mequires 3 step process. Took about 3 to 4 days and it looked great when finished. After a year of travel I'd park it do the process the following year because although It was covered during the winter months it needed to be polished again.
Last year a neighbor purchased a 2002 Ford 350 from his Father-in-law and as I passed his house walking he had just finished washing his new to him truck I was amazed at the shine and he told me the truck had always been polished with a product I'd never heard of. My truck is also about 16 years old and Dodge had blessed it with a good factory paint job, so I tried the product called Voom Gold.The results after cleaning with a clay bar or mild polish are great. Wish I'd known about this stuff when we had the Alpenlite.It's about 28 bucks a gallon and over the last year I've polished our Accord twice, my truck twice,our Outback and our new 24' Coleman and still have about a 1/3 gallon left.You just spray it on and wipe it off and the gloss and smooth feeling are incredible.Water will dance right off the surfaces and seems to last 3 months or so.
I'm sorry if this seems like a advertisement just the experience of a 77 year who has polished his share of vehicles in his day :)