I grew up driving on the sand in North Carolina. Most important tire pressure around 20-psi usually works for most stock vehicles. Use low range. Stay above the high tide mark in the sand. Carry recovery equipment (20,000 lb strap, a real shovel, jack an 12x12-inch plywood, tow hooks, ect.). On board air is really nice to have, even if it is a cheap pump. You do not need to use your brakes in dry or deep sand. Use the throtle only enough to get the vehicle moving. If you start to spin, throttle will only burry you deeper. Some parking brake can make both rear tires spin. Momentuem and running the engine in its powerband realy help. Dry sand is always deeper than wet sand.
The best advice I can give you is find a friend with sand driving experience "80% driver, 20% vehicle". Always keep some cash in your pocket when on the beach. Have a contengency, a phone # for a tow company that does beach recovery.
One last thing do not have any open alchol containers while driving on the beach, Rangers look for that and generally have 0 tolerance.
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