Something worth researching individually with a calculator and an open mind!
Search the boards, you'll find a variety of comments. I got tired of writing about how it makes no sense to me other than pre-paying your meals but even that forces you to pick the most expensive items in a menu, regardless of what you like to eat. That is, if you want to come out even. You do not need a voucher to share meals and save anyway, and for what you'll save...
Two resort places seem to thrill some. Just read the menus to see what the thrill is about.
One of those things worth searching restaurant menus and adding up before you buy, just search old posts including experiences ordering from them and so forth! Take some time...
Wanda