I'm new to the area--but why would you want to drive on the beautiful beaches? Is this some right of passage for long term residents?
Historically, vehicles have always been allowed on Walton County's beaches. Several decades ago, vehicles were banned, except at Grayton Beach, the access by One Seagrove Place, and Inlet Beach. The accesses at One Seagrove Place and Inlet Beach have been closed for years. Grayton Beach is the only access left.
Actually going to the beach at Grayton is difficult, if not impossible, unless you live in Grayton, or have a beach driving permit. Yes it is flat, but it is a very long way to walk. It is not a matter of "four-wheeling" as we used to do. It is going more-or-less straight down and straight back up.
The biggest single argument for continuation for driving at Grayton is not the primary reason most people want a permit, but it is because there is no other way to launch a boat into the Gulf in Walton County. The only other option is to launch into Choctawhatchee Bay and go around, which is inconvenient and costly.
And then, there are those for which having a driving permit is sort of a status symbol. I think it is these for whom the ordinance tolls.
I don't have one, and I do well without it. However, it is the only way my 80-year-old uncle is able to go down to the beach and fish. It's a way of life.