That is very cool, and no doubt gutsy.
I expect much depends on the sand. We have stayed at a campground in Florida Panhandle that has (or at least had since we haven’t visited in years) some spots on the beach, and have seen regular motorhomes parked on sand. Likewise, I’ve driven 2WD family cars on hard-packed beach sand like it was concrete.
The flip side is one of my friends got his Jeep Wrangler stuck in the soft sand during a beach party. The scary thought is that if a Jeep gets stuck, what’s going to pull you out? A tractor? Fortunately there were enough of us there to push it out after some digging.
Nice looking rig by the way.