FREE Slider & Small Drink at White Castle on May 15th This deal was posted on May 14, 2019 at 4:23 pm by Lana Facebook Pinterest Twitter Wednesday May 15th, get a FREE Slider and Small Freestyle Drink at Whitecastle with their coupon.GET IT HEREDon’t Miss out on FREE Money!Earn Cash and Rewards with YouGovTest Products with Product Report CardMake Extra $$ with Opinion OutpostGet Paid to Scan Groceries with NCP Mobile App