Cheyenne Frontier Days plans summer 2021 return at full capacity Cheyenne Frontier Days plans summer 2021 return at full capacity Friends gather for a concert at Cheyenne Frontier Days. Photo submitted by Michael Zuniga The “Daddy of ‘em All” is making a comeback this summer with plans for in-person, full capacity experiences. Governor Mark Gordon gave a statement of approval for Cheyenne Frontier Days to reopen normally at a press conference on April 7. Currently, there will be no mask requirement at Cheyenne Frontier Days. Thorough cleaning and sanitization will be adhered to during events in order to ensure public health safety. All attendees are required to observe health protocols, which can be found on the Cheyenne Frontier Days website. These include fully digital ticketing, practicing personal hygiene and only making payments with debit or credit cards.