Dish TV is totally aware that people used their service in RVs and they have no problem with it at all. It is hard to have cable or FIOS in an RV. You need a mailing address anyways and full-time RVers use mailing services for that. The only thing that affects is the time zone your subscription has on the Program Guide. You don't need to lie to them.
The lack of Locals for me is a benefit. As an RVer, I get to have DNS and with both the East Coast and West Coast feeds and the VIP622, I can capture just about anything I want to.
Most of the dome dishes are single LNBF and point to only one satellite at a time and very few can point to all three satellites, so no HDTV. There are new dishes that swing up and automatically lock onto all three satellites. But the problem with roof dishes is trees and RV parks tend to have them. That is why we use a ground tripod.
Read my articles above. The selection of tripods is important as well as the tools you should have. We set the tripod dish up even for overnight stays. The satellite Internet dish and the TV dish take about 40 minutes to set up and by that time the wife has the inside of the RV setup.
Repair work I handle myself. I don't want "technicians" running cable in my RV. I had the VIP622 fail once, Dish TV shipped to where we were at the time, and I returned the old unit. You don't have to lie to Dish TV about where you are.
Just recently, I was having a problem that looked like it might need a replacement VIP622 but is wasn't a hard failure, and Dish TV wanted a technician to look at it before they would replace the unit. But they wouldn't send a Dish TV technician because our house was on wheels and I would have to call a local technician. Well I thought that was stupid as well as the local technician thought it was too. But the problem went away.