I have not looked into Direct tv for some time now but at one time all you needed was to take one of you home receivers with you and a portable dish. Log in as if at home.
I have also used Dish tv almost without problems. Tech phone help was terrible. If I was boondocking
, they would want a physical address in order to activate it. Some times I would just give them some address near where I was camped. They didn't like nearest cross roads. But it was good to be able to suspend the service once we returned home. You would pay for the entire month even if you last used it for just a few days that month. But this has been a few years ago.