Hi Rachelle! Congratulations early on your anniversary celebration at Walt Disney World!
There are some great restaurants through-out the property where you could enjoy this nice dinner with your children. All Disney dining is open for children of all ages with the exception of Victoria and Alberts that does have an age limit of 12 to dine there.
Some of my thoughts and suggestions include:
Citricos or Narcoossee's in the Grand Floridian
California Grill in the Contemporary
Yachtsman Steakhouse in the Yacht Club resort
Artist Point in the Wilderness Lodge
For a fun park dining option you might consider Teppan Edo in the Japan pavilion of EPCOT. This is where they will cook the food in front of you and it is not only delicious but also very entertaining.
To see sample menus go to
www.allears.net and type in MENUS in the search box. Dress is casual for all restaurants with the exception of Victoria and Alberts that require coats.