Spencer, I want this to be a classic American beach party but it will be inside with the air condition unit on high..so I won't worry about the heat. Are mojitos and kebobs typical American? I want it to feel like the movie "Back to the Beach" even if its in my apartment. I think technically mojitos are from Cuba, but they're popular enough in America I don't think you'd have any authenticity problems, especially in California. You could also consider mint juleps, if you want to throwback to 19th century Americana. I think kebobs can be American if you don't go overboard. Chicken, onion, bell pepper, mushroom, etc would be fine; I think you'd have a less American taste if you're seasoning it with SE Asian spices and the like.