If your using or getting an HR44 or HR54 Genie, they support wireless minis, so all you need is to take your Genie, a mini for each TV after your main one and the Video bridge. You likely will never get a Direct employee or contractor to wire your RV. Its not hard to do, you just need to duplicate what they do in your house in your RV.
I think your misunderstanding what you need for your RV. From the Travler, once converted to SWM is a single coax from the turret to the power supply. The other three coax that were connected to the turret will no longer be used. So you can cut them off and discard them.