Five Flags Center in Dubuque is opening eight indoor pickleball courts on November 2nd. The facilities are available to reserve when other events are not taking up the arena space. Five Flags General Manager Aaron Rainey said the idea to open indoor courts at the center was born out of his family’s love for the game. It got him thinking about how many Dubuque residents might be interested in an indoor court in the winter.Reservations are required to play, and courts cost $25 per hour.