Looking for a beach trip, no passport

[goodgrief]

I'm pretty easy, I guess, if it's got a palm tree on it, it's tropical enough for me, although a good part of the northern Gulf of Mexico is technically speaking only the subtropics. I wouldn't write it off too soon if it's real important that the trip be low budget. But there are some reasonably priced beaches in PR once you get away from San Juan. And it's often easy to get a very low priced airfare there. So there's that. But even with today's obscene gas prices, there can be an edge with driving somewhere, because you don't have to get a rental car. What to do, what to do.