it costs $60 and it gets you 20% off your meal. i bought mine just before i left dec 3. i picked up a temporary card at the guest relations (outside park) at epcot. it takes about 4 weeks to get it in the mail
some of the restaurants i used it at were marrakesh, yachtsman, flying fish, whispering canyon, hollywood brown derby, artists pallette. i already made my $60 back. just about all the restaurants participate. they will send you a list with your card
it's good for a year. you can get extra cards say for your spouse for $25 but if he/she is always with you then there is no need because it's 20% off entire bill and not just for cardholder. i feel it's worth it if you go several times a year which i assume you do if you're a AP holder.