As per luau food, simple tropical dishes will do such as roasted pig, barbeque, grilled sea foods, and tropical fruit kebabs. Cocktails and tropical fruit juices play big roles too for a luau party is not complete without the cocktails. You can serve the food on a typical long buffet table with pineapple and coconut as your centerpiece.
For other details like the invitations, you can now order luau invitations online. You can customize your own design or choose from different beautiful designs. You can personalize it with the names of your guests that will surely make an impression on them.
Another good thing about luau is your guests need not prepare and wear suits or any formal clothes. They can come to enjoy in their shorts and flip flops. I suggest you welcome them with flower garlands to give them a more Hawaiian feel.