DISH Winegard Questions?

[Mosnowman]

So I have been a Direct TV customer for many years. I am tired of new customers being treated better than loyal ones like myself. So I have decided to switch to DISH Winegard Trav’ler Fixed Roof Satellite on my new Fiver. I have several questions for you guys that have a Winegard Satellite. Not interested in tailgater etc. I am very familiar with issues regarding trees etc...I would like advice on the following questions.

1. Are you happy with DISH service using a Winegard?
2. I noticed Camping World has it on sale for $1,200 compared to DISH AT $1,600. Does DISH recognize you as a equal customer if you get your equipment from someone other than DISH?
3. Will DISH install on an RV or is it easy to do it yourself?

Thanks in advance!