Culebra (Costa Rica)
Cristian Lemeni Pop
Cancun: Free things to do in Cancun?
Try Market 23, it's the cheapest place to buy souvenirs take the bus, haggle/negotiate with the merchants and you will get all your shopping for at least 40 percent cheaper than anywhere else in cancun
Cancun: What are the most popular areas to stay in Cancun?
Grand Oasis Palm is awesome if you like to party it up all day/all night, plus I believe they have a groupon special for like 199/night all inclusive