Comic book promotion tomorrow

Tomorrow is Free Comic Book Day.
There were students supposed to wear Superhero costumes and handle the promotion, but they bailed out at the last minute.
Now I have to do the promotion of that shop as well, next to my own advertising.
This unrealiability because of inflated ego and lazynes is unbelievable.
I still feel a bit uneasy about wearing that tight Spider-Man costume. I have worn it before at a birthday party, but not at such a large public event. It is a bit exposing at the crotch area, and I don't want to wear cycling pants udnerneath, since there would be an ugly looking rim.
After that promotion my mother is coming from Namibia and will stay for about two weeks.