There are unspoken beach rules that every beach goer should follow, just as a matter of commone curtisy.
However, name the beach ................
Malibu, California
Mount Sinai, New York
Myrtle Beach South Carolina
Daytona Beach, Floria
Tybee Island, Georgia
Outer Banks, NC
Miami Beach, Florida
Laguna Beach, California
Every beach anywhere in the world that you visit also has INDIVIDUAL LAWS
for their beach. While their is at least at 1/2 dozen "clothing optional" beaches in Florida, in Myrtle Beach South Carolina thongs are agains the law..
So every beach location you travel to will have published laws for their particular beach. Just becuase you where able to drive on the beach in Daytona, Beach when you were their in the 1970's, if you try that in other united states beach communities, you will be arested. That may be an extreme example, but you get the idea.
Every beach has laws regarding: