Thanks for all the answers. I wore nice khakis and non-logo polo shirt and felt somewhat overdressed. There were lots of jeans and a few shorts. But we ate dinner early and that may have influenced the attire also.
It varies. You will see business people very well dressed and on the other hand you will see lots of tourists dressed very casual. I would wear something you fill comfortable with, of course depending on the occasion.
Downstairs dining seemed to be more vacation casual. Upstairs dining seemed more dressier, like business casual to as fancy as you would like.
Comfy. I wore capris
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