"Hi, We are planning to stay at this property. Is Maya worth the extra cost? There will be 4 adults and 3 kids."
Extra cost over which section?
If it's between the Lindo and Maya, I personally would not pay much more since they share all but a couple restaurants.
As of now, they have dropped the need for reservations for all but the Hibachi and the steak house restaurants, so the Del Mar and Beach only have limited reservations for those two. You can eat at other a la cartes as much as you want.
No limits on those reservations for Lindo or Maya.
Also, when are you going? Buffets and lobby at Del Mar and Beach are not air conditioned. If going in the summer, choose Lindo or Maya.
Activities are pretty much the same throughout the resorts.