Cancun/Playa del Carmen of dozens of fun activities. Mexico is one of my favorite destinations. It is merely a two hour plane ride from Atlanta. If you catch the last flight out of Atlanta on a Friday evening, you can skip the long Passport Control lines in Cancun for a fun filled beach weekend getaway. Your return flight would be Sunday afternoon. Playa is only a 45 minute ride from Cancun airport.
On your next trip to Cancun I would recommend the XPLOR Adventure Park. Opt for XPLOR Fuego which is in the evening. This gives you all day to sun bathe, cooler temps and shorter lines. The Park has a nine zip-line circuit, amphibious vehicle, hammock splash and spelunking. They serve a buffet lunch/dinner with unlimited non alcoholic beverages. All is covered under one price (not cheap so ask around for a deal). XPLOR is closer to Playa del Carmen so if you are in Cancun, expect to drive/ride 45 minutes.
Again, I attended XPLOR Fuego which is in the evening. The 9 zip lines were my favorite.