Friendly's to Offer Free Sundaes on National Cheeseburger Day

National Cheeseburger Day is September 18th. In celebration, all Friendly’s Restaurants locations are offering a free medium sundae with a purchase of any cheeseburger for Friendly’s Sweet Rewards Club members. 

Customers can join the Sweet Rewards Club by downloading the Friendly's mobile app or joining at https://www.friendlysrestaurants.com/login.

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