Donna,sounds like Lori and Ernie can give you some good choices. Sounds also like you are experiencing those nerves we all sometimes have. As far as miles per day, that's up to the individual and the type trip you're on. I used to do over 500 miles a day, anxious to get where I wanted to go , also wasn't tired and usually summer time so days were long, so still had plenty of daylight when I did stop. Now I might do somewhere between 200 and 300 miles per day, and I stop and smell the roses on the way. I love doing the back roads, that's always been my choice, no matter the amount of miles each day. I love seeing the small towns, some are so old and I love the history in them. Rest areas on the interstates, I always take more care when stopping then at other places as I figure they are a known area for anyone with mischief in mind. I never get out of my rig if only one car or few and I don't feel right about it. I. probably use my own bathroom more on trips and an afternoon rest is not bad either , I love traveling in my RV, better then any car travels as no one really knows how many are in with you.
Check the map for a route, I usually keep to the red roads on map,but have done black roads too, you shouldn't have any trouble traveling through any town , no matter the size as you travel all over Melbourne with no problems, you'll do fine. Walmart stops you should always ask, but when there are already half a dozen RVs there I have been guilty of just assuming its ok, usually always trucks there too. These are usually 24 hr WM's. Like Tina, I walk Maggie for her business then I'm usually inside , unless I need something from the store. You just have to use your own judgement. Google some of the towns you will be traveling through to see about city parks for your stops, some have small fees, out west some are totally free. If your internet service is short, go to the library and use their computers, most cities, small ones at least give travelers use of them, without their card.
I could go on and on, but you are going to be fine, make a route for yourself, but leave it in Jello, if on the road you see a sight advertised you would like to see down another road
Liz and I, have found some fabulous places that way. A long list of them !! Enjoy, try not to get uptight, not doing I-95 would be the biggest relief to me
Through the years have done it so much and so boring and in places stinky LOL.
Have a great trip, keep us all posted, enjoy the time before then of studying your map and finding a nice route, with maybe a place you'd like to stop by and visit.
This trip is yours and no matter how you do it or what you decide it will be right, there are no real rules of traveling these roads, we all do our own thing our own way and in sharing we sometimes pick up other ideas from others.
Safe travels, my friend,
CArol