You don't mention the makeup of your travel party, that might impact choices - or if you are on a dining plan or paying oop - if I'm in essence pre-paying with the dining plan, I might choose experience over food quality and cost if the money isn't coming directly out of my wallet at the end of the meal
From Animal Kingdom you should be able to hop a bus back to any of the resorts .... and since AK closes so early
Beach Club / Yacht Club -- Beaches and Cream for an old-school ice cream parlor meal - and maybe topping the night off with a last couple of attractions at Hollywood Studios
or if there is a seafood lover in the group - Cape May buffer at the Beach Club with king crab legs etc.
You can take a bus from AK to Boardwalk Inn (closest to international gateway at Epcot) - maybe Biergarten in Epcot? if you can get there before the entertainment ends
You can take a bus from AK to Grand Floridian and get one last dinner with some characters at 1900 Park Fare
Maybe soak up some atmosphere and not worry about the food - with a casual quick service dinner at Art of Animation??
Cajun? Boatwrights at Port Orleans
Based on when you travel, and I'm assuming it's at least 6 months out based on the question, some new restaurants might be open in the new Disney Springs?? The Indiana Jones bar? STK? Morimoto? Boathouse - that's already open and accepting the dining plan
Is there a major Disney movie opening around the holidays?? Dinner at the movies at Downtown Disney?
But, mostly Boma is one of our favorites, and there is a lot to be said for buffets and differing tastes, and the quality of the Boma buffet is higher than other Disney buffets - it really does transport you and you get to experience some exotic foods, but with plenty of familiar items for the pickier parts of the dining parties - you can look at the animals on the savannah before or after dinner, the bar at the AKL (Victoria's Falls) is absolutely beautiful, as is the lobby - it's been a few years since we've stayed at AKL, but there was a story-teller at the campfire at the circle of rocking chairs outside before sunset, and night vision scavenger hunts?? I don't know if those still exist
But, mostly, remember supply and demand - if you're unsure, book what is the hardest 'get' in your list of possibilities, and it is easier to change from there
For arguments sake if you thought you might want to end with dinner at BOG, that is the 'hardest', so grab that, and you would probably be able to change to something easier to get if you change your mind
And don't over-stress, we booked our trip for a group of 8 just 70 days before we travel in the heart of the busy season in August, and we were able to get most of what we wanted, not the exact times for everything, but close - and this included hard to get reservations like Crystal Palace at 8:00 am, BOG lunch, early Sci-Fi dinner on an EMH night, Tusker House at 10:40 on EMH morning allowing us to get the end of breakfast and the beginning of lunch
And I'm a NYer, so I understand that you can get better Chinese, Mexican, Italian, Japanese, - basically most cuisines, outside of Disney, so I usually try to go for experience or more exotic - and don't even get me started at what is 'passed off' as a bagel