Empty a few 16oz bottles of cranberry juice or white grape juice, and refill with your wine.
They did the same thing around here at all the parks by the lakes and rivers. We'd usually get one drunk yahoo blasting the boat radio, flying through swimmers on a jet ski at 40mph, or otherwise raising a ruckus. They were always easily identifiable by the 2nd degree sunburn. Instead of arresting those guys once a day, we got a liquor ban and the cops comb through the beachgoers doing cooler checks.
Cuz dontcha know theres a good fine for having booze at the beach, so its a moneymaker. Arresting Bob The Jackass and jailing him for a small fine was a negative cash flow situation.
Oh, but you can still buy wine and beer at some of the concession stands.
But the nice folks at Veryfine are quite accommodating and make bottles filled with all sorts of appropriate colored liquids. Many of them even mix well with vodka.
Be fearful when others are greedy, and greedy when others are fearful. Just another form of "buy low, sell high" for those who have trouble with things. This rule is not universal. Do not buy a 1973 Pinto because everyone else is afraid of it.