Digging up an old thread, but I was there yesterday for dinner. They now have a buffet style option on Mondays, Wednesdays and Fridays for 180 pesos. Coffee/Tea and dessert included. Other drinks are separate.
It's a nice option if you want to try some different dishes. It's more or less like there "Plato Arabe" (can't recall the exact name), but you can pick anything you want from the buffet.
I usually go there like once a month, just to get some variation to the "normal" Playa food.