Although we're not camping, we are also wondering if you can only add on the meals to a package. The new tickets are for anyone, but it sounds as though the meal plans are only available as an add on to a package, like the silver plan is now. It would be great if you could add it to a discounted room, or if they had a great deal on packages (not sure if they typically include campsites).
We have an AAA discount for a room in late April and I'm waiting, impatiently, to see if we can do the meal plan. I think it will work out well for us since we have one under 3 who eats a lot! There will be a lot of food to share with her.