Once Is an Accident
How do the costumed workers see out of their outfits? There are tiny slits or mesh cloth that allows them to see, though their viewing angle isn’t all that great. That’s probably what led this Tigger actor to smack the OP in their face a total of three times in a row.
So, who’s at fault here? The grumpy employee who’s drowning in their own sweat and can hardly see a thing? Or the OP who decided to keep his face within swinging distance two more times after the first slap? The first time was an accident, but the second and third were on you, OP.