Yeah, without a passport, your options are fairly limited. Unless you expedite! You might be able to get it in a matter of two weeks. Or, if you need to just renew, you can do that by mail.
I haven't done PR, but I absolutely fell in love with Grand Cayman (a little costly, though) and my most favorite place was Belize!! SIMPLY BEAUTIFUL! And it's very cost friendly, too.
You might want to try Tripadvisor.com. There are a LOT of reviews there from past visitors. I used this site quite extensively when I was researching my trip to Jamaica a few years back.