Hi Crunchiepink,
I haven't done Inventions myself, it is expensive but the reviews are always excellent, I don't think you can go far wrong with this one.
Cheaper options would be the Buffet Lunch/Dinner with Characters at the Lucky Nugget Saloon we're trying this for the first time next week, again always has good reviews, the Character Tea Party at Plaza Gardens, again a buffet mostly of mousses, cakes, pastries, ice-cream etc., although some people have reported sandwiches and pizza, don't know if that's only at certain times of the year.
Or Cafe Mickey in the Village, this restaurant opens all day right through from breakfast to about 11.00pm at night, again all the characters are present, you'll find the menu at
Cafe Mickey
Menus and prices for all the restaurants can be found on this site.
Hope this helps.
Jill.
The ones above are all restaurants where characters are present. I noticed from one of your other posts that your celebrating a birthday, you can order a birthday cake at Cafe Mickey, to be brought out at the end of your meal (22 euros extra).
I've rung and reserved this option for my DS, but you can order the cake when you arrive at the restaurant.