What sort of food does she like? I'm not a big seafood fan, so Cape May wouldn't be my choice. But I love the Marrakesh restaurant in Morocco and Jikos at AKL. Others may find them too "foreign" - but most everyone who has given them a try has been pleasantly surprised.
I'm not a fan of buffets, and don't care about meets and greets, so I wouldn't go to any of them. But your mother might love having the variety of choices that they usually offer, and the ability to eat more of something she really enjoys, and skipping something that doesn't appeal to her.
You might also want to think about alternating when you have your big meal of the day - having a large meal late every day can cut into a good night's sleep.