Here is something you can tell your patrons that enjoy cosplaying. Cosplaying might be dress-up for most people, however in the anime/manga conventions this hobby is taken very seriously. The individuals that participate are very talented in costume making, a master level is when he or she actually designs and constructs all of their costumes. If you have a patron that enjoys this hobby this will give them something to strive to attend in Japan. Each year they have the World Cosplay Summit. The summit is represented by 17 countries: Australia; Brazil; China; Denmark; Finland; France; Germany; Italy; Japan; Malaysia; The Netherlands; Mexico; Singapore; South Korea; Spain; Thailand; and The United States. This year the winners were from Brazil.
http://www.animenewsnetwork.com/interest/2011-08-07/brazil-wins-world-cosplay-summit-2011