Since Alot of Cedar Fair parks, Universal Orlando and Discovery Cove in Orlando do this already, this could work. An All You Can eat meal deal package. You can order it with admission or without. I could see alot of Six Flags Parks doing this because it keeps people in the park spending money. Also Food prices have become scary in the last few years in my opinion. Here is one for California's Great America.
You're better off going to Wendy's just southeast of SWO..
http://themeparkcritic.com/scripts/profile/ViewProfile.asp?ViewID=2909 A furious storm once roared `cross the sea, catching ships in its path, helpless to flee. Instead of a certain and watery doom, the winds swept them here to Typhoon Lagoon!
They do this at Aquatica, great deal as mentioned, but its $19.99 all day all you can eat. You can enter as much as you want and get as much as you want. They also offer a one time use of $12.99. It was sweet, hot dogs, burgers, salads, bbq chicken, fruit and pop all there. If SFGAm did it, it would be such a great thing, as I would pay the $20 to eat there all day. Also, there was ample seating and the park was at capacity, so that also helps.
Universal Orlando Mechanical Engineer Marathon down, Goofy to go.
The deal at Aqauatica was a great deal. I wish we would have done the all day thing though. Then we could have gotten a snack before we went back to Sea World. If they had this at SFGAm, I'd definitely do it, possibly each time that I went.