It is in June so how do you manage bugs, heat, etc.? Do's + Dont's? There will be about 40 people. What time of day(plus evening) is best?
You may want to consider tiki torches or bug repellent candles. Normally those work. Having bug spray on hand is not a bad idea either. Bugs can be out any time of day, but they seem to really come out after 6 or 7pm at night. It depends on your location.