[CaptainGizmo]

I strongly recommend RV Trip Wizard. It's a web-based trip planning tool that I use for every trip we take. More features than I can begin to list. But, you can filter campgrounds along a route by "Big Rig", Stars, Amenities, Clubs, etc. etc. etc.

Many benefits, including their companion app which lets you sync your trip as well as provides RV GPS routing; not my favorite, though.

I did a short video to explain how I use it:
https://www.youtube.com/watch?v=Ota2kHAiIgA

Hope this helps.