Why run back and forth to the house when you can make all of your preparations right outside in the fresh air? You'll need a food-prep surface (whether it's a custom-built bluestone countertop or a small, all-weather table), good lighting to keep the party going after nightfall, shelter for the chef (whether it's a pergola or market umbrella), and if you want to go all out, a sink and some appliances.
See the 7 musts for a five-star outdoor kitchen and our money-saving suggestions for each one in Cook Up a Great Outdoor Kitchen
Pricewise: Patio Umbrellas
Low-Cost Outdoor Kitchen Altrnatives