I sent some questions to the resort and below are the responses.
What are the differences between the Akumal, Tulum and Coba resorts?
Tulum was the first hotel of the complex with 858 rooms, only 84 juniors suites and the rest of them standar rooms.Akumal was the second in built with 630 rooms , 72 standar and 558 junior suites. Coba the last one in built with 1080 rooms all junior suites.
Is there room service; if so what hours?
Only if you are located in the Golden Club Akumal or Golden Club Coba 24 hrs ( snack menu ),
How often is the wet bar restocked?
I belive you mean mini bar located at the room , this service is restocked every day
What time does alcohol stop being served I have seen different time on different sites?
The bars located by the pool and beach area close at 5:00 pm , bars located in the lobby from 10 am till 11:00 pm Music Bar from 6:30 pm till 10:30 pm , Bars located at Hacienda Doña Isabel from 7:00 pm till midnight and Disco from midnight till 2:00 am
If guests stays for 4 or 7 nights how many nights can they eat at the a la cart restaurant?
in the order of:
3 or 4 nights 1 dinner
5 or 6 nights 2 dinners
7 or 9 nights 3 dinners
Hope it helps!