The Dress Code for Napa Wine Bar is 'Cruise Casual'. For women, it includes summer and casual dresses, skirts, regular or capri pants, shorts, jeans and tops. Khakis, jeans, shorts and casual shirts are fine for men. Evening dining attire in the Napa Wine Bar for women includes slacks or jeans, dresses, skirts and tops. For men, it's jeans or slacks with a collared shirt and closed-toed shoes.