My wife is big on planning. She's a CPA, and everything needs to be just so.
Not me... my plan consists of packing the trailer and going South. Or East.
After a few short trips, and now a longer one of 29 days in, Alabama, Mississippi, and Louisiana, she has embraced my lack of a plan. For her, that's amazing. It's just the two of us, and two cats, so that probably adds to our flexibility. Walmart, a good set of batteries, and a small generator also contribute to our flexibility.
I think another thing that adds to our ability to just hit the road, is the internet and GPS. No matter where you are, you can easily find the nearest museum, zoo, propane supply, campground, county park, Walmart, etc..
Not knocking planning though. I've been ADD since before anyone knew what it was, so planning, for me, is beyond tedious.
Anyway....enough about me!....Hope you enjoy your camping adventures with your girls. When my sisters and I outgrew wanting to go trailering or boating with the parents, we still looked back on our adventures as something very special.