Re: Beach driving
It depends on the sand. There are all kinds of sand! Sometimes it just about as good as pavement and you'll see all kinds of 2WD cars zooming around. There is hot, dry, deep sugar sand that will suck you in and and require 12 pounds of air in your tires and maybe at least a rear locker. If you're going to need to air down there will usually be a few people at air stations near the beach. Stop and talk to them, or the people airing down before getting on the sand.
Things are usually somewhere in between the extremes. If you're careful and don't break down, you'll probably make it back if you go out on the beach. Try it, adjust as necessary. Have fun.