I'm also not a fan of DL dinnig plan. As mentioned by other poster, you have great potential to loose money or end up spending more money in order to get the full value of the voucher. When in comes to the character breakfast voucher, it doesn't get much better. The price is based on Goofy's Kitchen, the most expensive breakfast. So if you use your character breakfast at the Plaza with Minnie and Friends, your going to loose money.
IMO, you're better off budgeting money for food instead of adding it into your package. On Harbor Blvd there is a Mimi's, Minnies, Tony Romas, IHOP, Dennys, and a Joe's Crab Shack. We have a Joe's in Sacamento, I really like it. It is loud (beware), but a very upbeat environment. The others are kinda ehh, but at least you're not paying "ouch" prices for "ehh" food.