Wayback Burgers has come again with their annual #FreeShakeDay which usually occur on the first day of summer.
To enjoy their free vanilla milkshakes, what you need to do is to visit Wayback Burgers participating restaurants on 20 June, 2020 which is National Vanilla Milkshake Day. Guests don’t need to make any purchase to enjoy this offer. If you are privileged to visit any of the participating restaurants on 20 June 2020, you will receive one free 12-ounce Vanilla Milkshake, while supplies last.
