If you only get to have one Table Service, I would suggest a Table Service Reservation that gives you a secondary "Bang for your Buck" such as...
California Grill, on top of the Contemporary, with a seating time which will allow you to watch the fireworks at the Magic Kingdom. Dinner entrees run from $23-$36.
An Early Seating at a Character Meal inside the park which will allow you to enter the park before it opens and take some amazing family photos without other tourists in the picture. The Crystal Palace offers a nice meal full of characters to start out the day in the World. Some teens still enjoy the characters, while others find it too childish. Mine still enjoy it, especially since they feel like they are too old to stand in line to meet characters in the parks, but still enjoy the experience. Adult Breakfasts are $18.99 which includes a non-alcoholic beverage.
With teenagers, you may also enjoy a meal at Morocco. Their sit down restaurant, Marrakesh, features a live band and entertainment in the form of very beautiful belly dancers who travel the restaurant and will come right up to your table. The food is a bit more exotic, but we like all kinds of food. The entree prices run from $20-$32.
The Brown Derby, at MGM, is part of the Fantasmic Dinner Package, so not only do you get an amazing dinner, but you get reserved seating for the Fantasmic Show, which can be a real life saver during busy times of the year. This restaurant is more upscale and adult than most Disney locations, but if your children would enjoy a fine dining experience, then this would be a great option. The entree prices run from $18-$32. Make sure you let them know you want to be part of the package, you can't just book there and get reserved seating. They will require a Credit Card to hold your spot, and you will be charged if you don't show. If you want to cancel, you have to do so at least 48 hours in advance.
Planning can be so much fun! You can get wonderful lists of the Menu's at any Disney Restaurant at All Ears Net. We find it helpful to plan our menu before we get there.
I hope this helps.
--Eeyore's Wife