Delegate, delegate, delegate. Put your brother in charge of receiving your guests, put a cousin in charge of keeping an eagle eye on the clock, keep your grandmother in charge of the money you receive in those ubiquitous envelopes.

Keep handy a notebook with the names and contact numbers of all the vendors involved with the wedding.. Have a final meeting with them at least a week before the wedding to iron out all the details. 

Make sure the vendors know what time he or she is expected to start working on the venue. Try to have the caterers and the decorators visit the venue earlier so that they know what they would be working with.

Arrange for cars and drivers to transport out of town guests. Have a list of who is going with who and where; so there is no last minute scrambling. 

Have a velvet rope around the mandap so you don't have people crowding the ceremony so the photographer and videographer have room to work.

Do give a realistic estimate to the caterers. You don't want to run short of ice cream or food. 

Decide how many rolls of film and tapes you want used beforehand with the photographer/videographer. Plan out their vantage positions and make sure there are enough electrical connections available. 

If you have relatives coming from out of town for the wedding, call some hotels for group discounts and don't forget to prepare some food.

Allocate a couple of days before the wedding for the beauty treatments. Make sure you have the entire day to indulge yourself. Do have a full rehearsal a couple of days before the wedding if you're planning an elaborate affair. 

Keep all your bridal trousseau and jewellery in a single room. As well as all the stuff you're going to be taking to your new home and number the items to be carried to the new home. And keep a list.