We drive on the beach a lot and there's been some great info in this post.

I always try to be ahead of the sand.. It can change consistency without warning so always look for escape routes and be ready with the pedal to keep momentum up. But don't let the wheels spin too much if you get stuck.. Max tracks and snatch straps are good accessories to have along.

Just run it up on wheel ramps and wash it for at least 45 to an hour to dilute and wash away any salt..

Take beer.