In Florida theme parks are not illegal to carry in but all of them have security search all bags being brought in. So fanny packs, or OWB covered by a shirt won’t work. I normally carry my little P3AT 380 Kel-Tec in a nemesis pocket holster.
I ware short cargo shorts, and it disappears in my front pocket.
But beware, while 90% of all rides exert positive g-force, some from time to time, hit you with negative G’s and even things in your pocket can fly out, if not fully secure.