If this is the first time EVER that you've camped in an RV, or
this particular RV, I'd suggest that you start by heading to a
campground near where you live just to test it out- like a trial
run. You can practice dumping the holding tanks, etc.
Not all campgrounds accept reservations, but if your plans are
set, I'd call ahead and make as many reservations as possible.
You don't want to travel only to find that there is a special event
going on in the area and that all RV parks/campgrounds are full-
ask me how I know. :( If you make all your reservations in
advance make sure you know the campgrounds cancellation policy- you
never know when you may get sidetracked and decide to stay an
extra day here and there. Also, find out if you will be charged
when you make the reservation or if they just hold your credit card
info until you arrive.
Have you practiced driving your RV? If you've never driven
one and you're just getting started, you may want to ask about
pull-through sites. If you're camper doesn't have automatic
leveling jacks, you'll want to purchase a few to make sure your
camper is level.
I'd also ask about bathroom/laundry facilities. My family
found it more comfortable to use the bath houses at the
campgrounds rather than shower, etc. in the tiny camper bathroom.
Though most campgrounds (especially KOA's) offer clean
facilities, we still packed flip flops (or water shoes) for
the shower and a small can of disinfectant. :)
Do you know that you can also stay overnight in the parking lot
of many Walmarts? This was helpful to us when we were just
traveling through an area and didn't plan on sticking around to see
anything.
Have fun! It sounds like you're going to have an incredible
adventure!