Interesting. I worked in the auto industry for several years (sales and management) and there was a myth among many buyers that they had to bring the vehicle back to the dealer where it was bought for warranty service. I once had a guy that planned his work around vacations when he was visiting back in the area (had moved to another state after buying).
In the auto industry it is a MYTH. Any dealer that carries the franchise name is legally obligated to provide warranty service on the makes and models they sell/service.
I would think similar laws as to warranty service would apply to the RV industry as well, but I could obviously be wrong.
Of course with campers you are only talking about the first year of ownership (maybe 2 if you opted for the 2nd year of manufacturer warranty).
Would really piss me off to be on the road and have a manufacturer defect covered by warranty and not be able to have it covered at another dealer.
3rd Party extended warranties are a completely different story - those are like insurance - gotta find a participating provider in the RV Doctor Directory
2011 FR Rockwood Premiere A126 Hard Side
TV=2011 Jeep Wrangler Sahara 2 Dr
Reese 66065 WDH, Curt WDH Shank #17120
Prodigy P2 Brake Controller, Mopar 7-pin Harness
B&M Transmission Cooler (#70268)