You can see parties by tapping on the party building or on your main menu. All parties have different tasks that you need to complete in order to start it. And once the task is completed, you can start the party with Coins!
All parties boost the income of the dishes from 3 different food categories. If you have dishes from these categories, you'll be selling more of them at the party. So, just check out the categories on the party popup and cook some of those dishes to make a profit!
In order to open the doors to your customers, you also need to place some decorations. When you're ready, you can enjoy watching party guests, popping bubbles and making tip combos!