You don't say if you are looking for male or female clothes - I can really only comment on the latter, and would recommend Mambo Chill, Pretty Ethnic, Wings, Surf Guru and if you have time get the ladies at Caribe Creation to run you up one of their custom designs. But remember that in almost all cases clothes will be more expensive here than in the US. On the golf cart front you have plenty of choices - again my personal recommendations are Island Adventures, Cholos and Ultimate Rentals.