We are going to the party on the 3rd also! We have dressed up the last 3 MNSSHPs and we are far from alone! I think probably 75% of the adults were dressed up. We also had MORE FUN then the ones that didn't dress up! LOL! One year I went as a doctor and last year my mom and I went as mouseketeers. I don't know what we are going as this year but we are definitely dressing up. Go, dress up, and have fun!