RICK ! and i arrived towards the end of the 12 and under tournament , which , aside from the totally rad power rangers cardboard costumes and protective helmets , nearly ended in tears . there were many adults , also clad in armour made of cardboard and duct tape .
According to the above context, answer the following question.
Why would so many people be in costumes at this event ?


It appears to be a fan convention of some sort .