Direct tv use

You will not get local channels over 250 miles from home. You should have an over air antenna for local channels in the area where you camp.

If you have the Genie I don't think you will be able to do it and still have Directv at home. IF you can find an older box to receive non-HD and add that to your home account for $7.00 a month. Then you can leave the Genie at home for the house sitter and leave the other box in the RV for when you are on the road and have an easier time setting up the dish to receive Directv as you only have to find one bird. Thats what I do.

I will assume you have the wireless Genie and mini Genies for second TVs?
If so you cannot have another box on your account. Sooo, you will need to take the Genie, video bridge, and a mini genie for your other TVs. To that you will need to wire your RV with new coax from a convenient outside location to the main TV location. Then it will only be necessary to buy an outside antenna. That can take the form of a tripod dish assembly for around 200 dollars, or an automatic rooftop antenna for around 1500 dollars. The rooftop can be very limited because of trees, whereas the ground antenna can be hard to setup. There is no dome type antenna that I know of that can be used with the Genie system.

Thanks, the grandson will be glad to hear that.

Yes, as long as you have multiple receivers.
We take a standard receiver from the house.

YES

yes