i dunno where you are getting married but you can have a candy bar (certain vendors in bigger cities in america tend to offer it) and it comes with small chinese take out boxes in diff colors, and diff colored jellybeands, chocolates, and so forth. It also has a candy bartender that way guests can have help if needed, ask questions about waht to try and to keep the kids from running a muck of the thing.
i'm in the UK, i have to do some research to see if anyone provides this... :) I'd love to have a candy bartender present cos my cousins are sugar-nuts :) and would wreck havoc.