I will try and help, but I would recommend that you go the the allearsnet.com to get menus from each restaraunt. That way you can see choices and prices for each place.
MK does not serve any alcohol so if you really want the wine with dinner I would suggest going to one of the monorail resorts for dinner. The California Grill at the CR is one of our favorites and has good seafood choices including sushi.
Epoct has the Coral Reef for seafood. We have enjoyed it but have not been in quite a while. It seems lately people have not been as happy with it. There are so many seat down places in World Showcase you should have no problem finding a place.
I'm not sure about MGM for you. We always go to 50's Primetime and love it but it may not be the feel you are looking for. Maybe do a search on this board for Brown Derby reviews. That sounds like a nice place but I only ate there once 13 years ago and frankly just don't remember it!
AK only has the Rainforest Cafe for seatdown. It is good but loud. Maybe head to DD that night for lots of restaurant choices.
HTH!