Put together a fifteen-member team to compete for prizes. Each team must have at least one woman and all participants must be 18 years or older. Visit http://wichitariverfest.com/fun.php?page=event_registration to register. Registered teams can pick up packets from the Wichita Festivals office (444 E William) through June 1 at 5 p.m. The cost is $150 per team, which includes 15 riverfest buttons.