Interesting topic. When it comes to sand and Truck/TC I am definitely a n00b. We are camped currently on Padre Island in South Texas at Padre National Park where you can drive and camp on the shore of the Gulf of Mexico. The road is hard packed and I feel safe but imagine that getting stuck with a large TC wouldn't be much fun. Before we hit the sand I locked int 4wd just in case. A compressor is on my list of things to add to be able to air down a bit.
BTW within the Padre National Seashore park there is a couple of campgrounds but pretty weak IMO as they just pack you in right next to each other parking lot style. There is also 60 miles or so of beach that you can drive/camp on for free. Pretty sweet. It's been a while since we camped near the ocean and never this close.
I will second the vacuum comment. We have a Makita 18v system for a couple different things and they make a vac that works quite well. Constant battle and the vacmakes it super easy and quick to tune up the camper floor.
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