No headware or anything else that would potentially fall off of you and cause someone to fall
For safety reasons don't wear hats, scarves, shades just to b safe.
If it's just the tail and not a full suit, I'd say go for it. Worst case scenario they tell you to take it off and to put it in a locker or your car.
No hats or head gear allowed in the building. Other than that I don't know of any restrictions.
Thanks! Your answer is awaiting moderation.