We had 2 CS leftover, one child wasn't hungry one day, and I didn't feel like eating another day. Also had 15 snacks left on day we left!! We used them for bottled water, boxes of donuts, bakery cookies and Mickey rice krispie treats.
I haven't added it up so don't know if we still came out ahead, but I'm glad we did it this one time, since it was a very special family trip. Nice to be able to order anything and not be concerned with price. However, on the last day we were exhausted and just did not want to go all the way back to MGM to eat at 50's Prime Time, where we had an ADR. Luckily, our resort concierge was able to get us in at Kona and it was GREAT!
One word of warning (I know a lot of people debate this) - the kid's menus are terrible. Very few choices (mainly chicken nuggets and mac & cheese) and the same everywhere.