We have had Dish at home for many years. A number of years ago we added a receiver in the RV for an additional $7/mo to the home account. And yes, it received the same channels as our home account. If we traveled out of our area, I called and had the local channels changed to the nearest major city we were close to at the time. That disabled the home channels at our home, but since no one was there it did not matter.
BUT. Our daughter moved back in and she was not happy when we traveled and messed up the Dish programming for her. So I changed the RV to a separate pay-as-you-go account and only pay for the months we are in the RV. Now that account is completely separate from the home account and I can change the locals without affecting the receivers at home.
We have the Hopper and Wallys at home, but have an older vip211k receiver and Tailgater in the RV.
If you go with the pay-as-you-go plan, do not authorize them to do an auto charge to your credit card each month. Call each month you are using it and pay for that month only. If you allow auto charge and forget to call and stop your service they will continue to charge your card each month. If you normally call to pay each month and you are not going to use the RV for the next month(s), simply do not call. They will automatically stop your service until you call to restart it. No additional charge.