Will be driving through the area in a 45 foot RV and would love to stop. Is there RV parking at both the visitor center and Reno-Benteen battlefield?

There are a few parallel parking spots along one side of the road for longer vehicles. But it's very limited so if your a short enough RV the other side has pull in spots (I have a 159 promaster and fit)

I saw alot of buses and longer vehicles there. Maybe at top of hill?

Yes. There is parking. That won't be a problem.

I believe yes.

I believe so.....you will absolutely love it there also we did see a lot of motor homes there.