The responsibility of DISH is to obtain the paperwork that proves you are an RV'r or Trucker. You must provide that.
This is not true. At one time, the customer had to go through a process to qualify for distant networks. DISH no longer offers those, so they no longer require a customer to qualify as an RV'er. DISH also had a RV section of csr's trained to handle such, they no longer do. I've changed my service address many times in the 8 years I've been full time RV'ing, and I've never told DISH I was an RV'er nor furnished any paperwork.