We just ate there last week, and loved it. We took the kids to the Neverland Club, and made it an adults only meal, but since you are going on Mother's Day, you prob. won't want to do that. I saw many children there, so you will be fine.
We ordered the shrimp cocktail, and crab cakes, for our appetizers. BOth were very good. I go the beef, and lobster meal, and DH, the tuna, all of which were yummy. For dessert I got the strawberry/rhubarb cobbler, and DH, the creme brulee.
The bar drinks are very good too- The choc. martini, and ditry banana martini, are our new favorite disney drinks.
Just one note- The restaurant is out by the marina- Very nice views, however if it is raining, be sure to take an umbrella or 2. A little bit of a walk from the GR main bldg.
Have fun. We used the dining plan too. Since the kids ate at the neverland club, we could use thier credits, which worked out nicely. Total w t/t around $150.00