If you want to know what the law is regarding driving on the beach you need to seek the advice of an attorney.
Our company went to great expense to clearly understand the laws of beach ownership, Queen's beach, beach easements etc. Even with a full report from our attorneys we feel in some areas we would need to have the attorney further clarify the law.
It is a lot more complicated than saying there is the Queen's way. It isn't clear cut and dried.
But it is always fun to watch the board members express their interpretation of the law.