There's a long thread about them on the Budget Board that will answer just about any question you might have about the meal vouchers.
Everything You Wanted to Know About Vouchers
In brief, they are coupons that you purchase in advance from a buying club like the Hotwire Savings Club or Connections123
A Quick & Casual (Q&C) Voucher is good for lunch or dinner at select restaurants. The voucher entitles you to one entrée, one side (if not included with the entrée), a non-alcoholic beverage and dessert. They cost in the range of $11.50 when purchased thru the buying clubs.
A Vacation Kingdom Lunch Voucher (VKL) is good for lunch only at select restaurants which are generally sitdown restaurants instead of counter service. The VKL entitles you to an appetizer, entrée, side, non-alcoholic beverage and dessert. It is only good during the hours when a lunch menu is being served. Adult VKLs are $31.00 and children's are $12.75.
Breakfast Vouchers can be used at select restaurants, including some character meals like CRT. They run $18.25 (adult) and $11.00 (child). Each breakfast includes a choice of juice, one main breakfast dish, one hot beverage and one bakery item or full breakfast buffet.
The vouchers not only cover the cost of the meal but also the tax and any gratuities that you might pay. In some cases, this can be quite a savings over paying out of pocket at the time of the meal. However, the vouchers will limit you to the restaurants listed on their reverse sides.
HTH
