The bottom line on service dogs can be found on the Americans with Disabilities website.
However, if one is so arrogant as to believe the law does not apply to them, please remember that you are tarnishing the reputation of true service dogs and making it harder for legitimate handicapped persons to enter and enjoy the same facilities you do.
If you are not truly handicapped, please leave the dog at home.
This prevents possible physical attacks on innocent by-standing true service dogs who are diligently trying to do their jobs.
From personal experience at the local WAIF “Wag & Walk,” these words were actually spoken seconds before the first owner’s choice to attempt to make mincemeat out of another innocent by-standing dog.
No one knows what will set any dog off.
Famous last words: “Oh, my dog is friendly and would never attack another dog.”
Leash laws exist for a reason. Please obey them, even on the public beaches.