Casual is fine. Business casual is better, but with the exception of Beach wear, you will be fine
My friends and I showed up in T-shirts and jeans because we didn't realize what it was like, it wasn't a big deal.
Business casual is fine. Jeans and a button shirt are ok, too. Shorts and flip flops are not. You'll get seated but you'd be an insult to the other guests. Better to go next door to Bubba Gump's.
I went with my wife after a long day at Disney. Silly Disney shirt, silly hat. No one batted an eye. Genuine hospitality
Agree with casual dressy. Think about business casual attire and you should feel comfortable. I would skip t-shirts when going in for dinner, they won't turn you away, but you will feel better in polo or button up shirt.
Casual dressy.
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