Not sure if celiac friendly. I think you can get them to clean out the blizzard machine. I order fries, which I believed are fried with other gluten containing items. I also have ordered an M&M blizzard, Reese's Peanut Butter Cup blizzard, a blue raspberry artic rush, and a grilled chicken sandwich minus the bun. I never got sick. Again, not sure about cross contamination.