We don't have any requirements, but we would recommend comfortable walking shoes and recommend against any shoes that might easily slip off of your feet.
No was just there yesterday.. had flip flops on
Didn't see anything saying closed shoes required. I would wear sneakers or walking shoes, the ship is huge and lots of stairs.
I'm not sure if its required, although I highly recommend it. There is quite a bit of climbing up and down ship stairs.
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