casual dress will be just fine considering it'll probably be raining when you get here and the temperature will probably be in the mid to upper 40's F. You can't go wrong with khakis and a button down shirt although I suspect that quite a few folks will be rockin it in jeans and tee shirts! Come dressed for fun and prepare your palate for some delicious foods and even better wines! you're gonna have so much fun, you're not gonna wanna have to go back home!