They are the Vacation Kingdom lunch vouchers. Priced at $30.50 for adults and $12.75 for kids. They include an appetizer, entree, drink and dessert. I think its a good deal if your sharing but just for 1 adult kind of pricey.
Our one meal at RF came to about $70 ordering the lobster and steak (with an upgrade). The voucher includes all of the above (appetizer, main course, drink, dessert) as well as the tip and tax...so although we share because it's soo much food..for one person, that would be very reasonable where I live.
You have to buy them thru Connections or Simple Escapes and yes they are good at other resaurants. If you check the messages stuck at the top fo the board--the "Important" ones you can find a lits of places to use them.