I hate to see a question go unanswered so here you go!
From mousesavers.com, thank you Mary:
"Meal Plus" Program
The Animal Kingdom "Meal Plus" Program allows you to purchase a special voucher at any Animal Kingdom counter service restaurant (Restaurantosaurus, Flame Tree Barbecue, Pizzafari, or Tusker House) that entitles you to the following:
counter service meal with small drink (non-alcoholic) - but many readers report receiving a large drink
coupon for ice cream, popcorn OR a piece of fresh fruit
coupon for a bottle of water or soda
The cost is $11.99 for adults and $5.99 for kids, which is quite a good deal considering that the higher-priced counter service meals alone can set you back that much, once you add the drink.
The "Meal Plus" vouchers are only good the day you purchase them, but as MouseSavers.com reader Kim A reports, "I recommend buying the meal deal early (before the lunch crowd) so you have the coupons the whole day. You don't have to get your meal at that time. That way, if you eat a late lunch like we did, you can use the coupons for a snack and drink during the busy lunch time to hold you over for your later lunch. Especially with the hot weather coming, it was nice to be able to get an ice cream at noon."
Taken from mousesavers.com