Hey CB! Here's the restaurants that my WC emailed me:
Restaurants In Nizuc
Manglar Rest. - Italian Buffet, Air Conditioning, casual dress code. (35 pp)
Palapa Delfines Rest. – Grill, open air, casual dress code. (25 pp)
Restaurants in Sunrise
Gondola Rest. - Italian Buffet, Air Conditioning, casual dress code. (35 pp)
Barrucada Palapa – International /Steak, a la carte, ocean front, casual dress code. (30 pp)
Fragata Palapa- Seafood buffet, ocean front, casual dress code ( 30 pp)
I've only eaten in the lobby buffet, after I had my amazing spa appointments there last December so I can't really help you much further than this! Also, I'm pretty sure the Grand side has more restaurants, this list is from 2008.
Hope that helps!