National Slider Day 2020 Archives

White Castle Offers Free Slider Coupon Deal With No Purchase Required On May 15, 2020

White Castle Offers Free Slider Coupon Deal With No Purchase Necessary On May 15, 2020

May 15, 2020 Bob Miller

In celebration of National Slider Day, White Castle is offering fans a free Slider at participating locations nationwide on May 15, 2020. To take advantage of the offer, simply stop by the drive-thru at any ..