The people on the back float of the parade, are parents of children who are picked. My daughter has been on there, and because she was 6 she went on her own but those children who were about 3 or 4 had to be accompanied by a parent.
I agree with the suggestion of Blue Lagoon restaurant, but only if she likes the menu - my dh could not find anything he would eat so we have not tried it. But if she likes Mickey and Goofey I would suggest maybe trying Innventions, we have been (DH and me only) and went late when there were not many children and had some great interaction.
Also, I think the jewellery idea is good - they have some really nice pieces, necklaces, earrings etc.
I think I may have to print off this thread later and leaving it lying around to give my dh some suggestions.