This was discussed before, but I am not sure it was on this forum. (sorry)
You are correct that if you buy from someone else you may have trouble servicing locally. Howver having said that you may have trouble even if you did buy locally.
I paid extra to buy locally (armed with a quote from RV Wholsalers) and the salesman and I were able to make a deal we were both happy with using the quote as a starting point and not the MSRP like they wanted.
I also made allowances for driving out to Ohio to pick it up; staying at a local hotel till it was ready; paying the last minute "mandatory dealer prep" charges; paying the "hidden mandatory options" that were not in the original quote; etc.
So when I went in for work I expected to be handled fairly and was disappointed because the back shop was not very customer focused.
Just my experience, but there you are.
Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
2010 Flagstaff 8526RLWS - Superglide 3300
HAM CALLSIGN - KC3FFW