Disney Hawaiian shirts is all I wear to the parks, They have hawaiian shirts at Boutiki in the Poly. I would also check out the marketplace at Yacht/Beach Club, Bayview Gifts in the contemporary, Screendoor general store at the Boardwalk and then there is a store on sunset blvd at DHS(can't remember the name, its right next to Legends of Hollywood) These all have a good selection of various Hawaiian/Tommy Bahama shirts.