The free event, which runs from noon to 4 p.m., allows fans to get up close to the players and coaches.
Fans can get autographs and photos with their favorite players.
People who hope to get autographs can purchase vouchers in person at the Salt River Fields home plate box office starting at 11 a.m. on Monday.
Some of the other activities include a social media zone, Instagram scavenger hunt and face painting for the children.
Arizona has been in a rut since winning the NL West in 2011, a downward spiral that culminated with a 69-93 season in 2016. That led to the firing of GM Dave Stewart and manager Chip Hale, along with a reorganization of the front office that diminished the power of Tony La Russa in baseball operations.
New general manager Mike Hazen and manager Torey Lovullo are at the helm.
The Diamondbacks made few significant changes during the offseason, their biggest move being sending second baseman Jean Segura to Seattle in a four-player deal that brought right-hander Taijuan Walker to the desert.