Even though game night is a casual, fun, family-friendly affair, it doesn't mean you can leave your planning until the last minute. You won't be the only one looking to score chips and soda at the supermarket that weekend. Make a list of everything you need the weekend before and shop during the week, even at night (many supermarkets and box stores are open late), to avoid the crowds. Leave the weekend of your party for picking up last-minute items and prepping.