Set some ground rules when creating your guest list and stick to them, such as no co-workers or friends' children. Make sure your families know the rules.
Put together a basket of emergency items for the ladies' room at the reception. This includes things like hairspray, clear nail polish for stocking runs, and a mini sewing kit.
Have a manicure and pedicure before the wedding, but stay away from facials, which can cause an unexpected breakout.