We are traveling to Playa at the end of January with our two children who are 18 and 20. Looking for an all-inclusive not too far from town. Not sure if we should go with all adult - worried it will be mostly adult couples. Would like nice spa and gym as well as activities/entertainment. Looking for 4 or 5 star recommendations. Currently considering Paradisus Esmerelda or La Perla, RUi Palace Riviera Maya or Palace Mexico. Any advice?