We are going to MK on the 31st for the party. We also want to be there during some of the regular park day. I want to dress up for the party but I hear they won't let adults in wearing costumes before the party. I don't want to leave to get costumed up. I think my options are to basically have my hair and make up done and either A: wear my dress and just put a t shirt over it (would they let me?) Or B: take my dress in the park with me and change in the restroom. Anyone had any experience with this? What should I do?