You may have already been advised to make sure to take some time for your partner during the big day. But try to make some time just for yourself, too.
One of the things I found during a wedding was that from 7am there is no time to yourself. There is always someone in my room, always someone who had question, always a well wisher and always someone ready with a camera. It can become difficult to keep energy levels up when your on show for twelve or more hours at a stretch. We found brides wishing for a few minutes every few hours or so just to be able to go somewhere quiet and collect thoughts recharge batteries have a glass of water check your lipstick or just be uninterrupted for a few minutes then enjoy the day more.