The Frederick Keys are the Class A Affiliate of the Baltimore Orioles and are in Frederick, Maryland. Individual game tickets range in price from $7 to $12. All fans over the age of 2 entering Harry Grove Stadium must have a ticket. Children 5 years of age and under are permitted free at every home game, while little leaguers are admitted free on Sunday – Thursday nights. All free children must receive a complimentary ticket from the ticket office. This may be done in advance on the day of the game. No outside food or beverage is allowed in the Stadium.