Just remember if you are taking the kids, sand will get in everything (I think thats a rule).
Try to stay off the dunes and you might check on bonfire rules, some beaches require permits or distance or you can get a fine (example from Galveston) "A bonfire shall not be conducted within 100 feet of a structure, combustible materials, or vegetation, if on the beach."
There are "beach tents" out there, but IMHO a regular tent can do