Here are a couple of adds that can't go into the post on the subject because it makes the post too long.
On Ground Clearance
And many folks talk about just staying out of the ruts with a low ground clearance vehicle. That can work but many times it is not possible, like at ramps and narrow beach places, particularly when it's crowded or meeting oncoming vehicles. And it is generally those places that most often have deep soft sand.
Just something to keep in mind.
On Tips (where there are links eg NCBBA)
And one thing to emphasize.
Driving near the surf line or thru water can be risky at best.
One cardinal rule I learned many moons ago from my granpappy was to be very careful going where there are no tracks, even on what you think is hard pack, especially close to the water. Wet (or red ) sand is very deceiving. And be very concerned about driving thru any water on the beach. You have no clue what the sand is like under the water unless you see tracks in and out and even then I'd be concerned as conditions can change. OK when the tracks were made and an hour later, another disaster.