Enlist help from friends and family where possible. Everyone likes to be involved in a wedding and you do not have to do it all yourself.
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.
Wear your shoes before the day so that they are a little scuffed on the bottom to prevent slipping, and so you are sure they will be comfortable.