6.) Keep the bugs away
Ensure you do not have any stagnant water anywhere – that is where mosquitoes breed so you want to ensure that any stagnant water is dried up or removed before your party.
Also, keep bug spray on hand as well as bug repellent candles/gadgets surrounding the party can help repel bugs.
Have a fan near areas that have food, even on a light fan setting, it can keep weak fliers like mosquitoes and fruit flies away from the food. Food tents help as well (you can easily purchase these at the dollar store).