You dont have to a
I have worn a t-shirt today and have had no issues with any rides. Including the drop slide at the top of the volcano 😊
Unfortunately not. There are signs at each ride/slide that advises of this.
It depends on the ride. Most rides have a board at the start of the line which will tell you if a shirt is prohibited. I believe only the more intense slides, like the drop slides, are t-shirt prohibited.
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