I think Dole Whips are on the lower side of carbs/sugar. Other than that I can't think of anything specific but I bet you could lower sugar/carbs with portion control. That's what I do when I can't find a lower carb treat. The cake slices and cupcakes are huge, but you could just eat 1/4 of it. Or if you like candy, get 1 or 2 chocolates. It's a tricky place for avoiding sweets! Years ago when I didn't eat wheat or sugar I would bring my own desserts into the park.