As pp said, business casual is fine. We have seen people come in nice shorts and tops. DH and I are going with my best friend and her DH this year for our special 25th anniversary dinner, and I am wearing a sundress (I purchased for this occasion and our dinner at Emeril's later in our trip) and my DH will probably wear kaki shorts with a collered Mickey Hawaiian type shirt he has. We have always had great food and great service. It is VERY pricey and not on the dining plan though. We haven't been in three trips but our anxiously awaiting our visit in September.