Well, if San Salvador doesn't sound inviting then you aren't going to like what I have to say about Belize. I was there back in 1998 and it too was not very inviting. Very poor, and high petty crime. We were on the Belize Aggressor live aboard dive boat for the week and for anyone that dives I highly recommend it; however I would not recommend a land based trip unless you are into that rustic atmosphere of Ambergris Caye and don’t mind hour or so boat rides to the outer atolls. Other than diving there are some Aztec ruins, but that's about it unless you are into roughing it on eco tours.

Now there are flights from DFW to SJO (San Jose, Costa Rica) which is a beautiful country with lots to do. Volcanos, Black, white and yellow sand beaches, scuba diving, eco tours, rain forrest tours, butterfly farms, jungle river rides, Coffee plantation, etc. Sunrise breakfast on Caribbean beach, lunch picnic on a volcano, and sunset dinner on the pacific. Well you get the idea. San Jose is kind of nice for a day or two. We have customers down there and have visited numerous times - and will be back there later this month. FWIW, Costa Rica has the highest literacy rate in North America.