hey guys. I know there are tons of threads about this but I still have a couple questions that I couldn't find answers to. I have an address to a place in Florida so that will work. I'm looking to get multiple receivers(as many as your allowed). The only problem is the place I have is just a small trailer. Does an installer have to come to my place to activate them? I could get away with one but I want 5-7 boxes. There's no way I could have that many in a tiny place. How can I get around this? Can I buy activated boxes from a retailer??