1. If you haven’t done it on the day, or you’ve forgotten something, it probably wasn’t that important and so don’t spend your day worrying about it. Make sure you benefit from all of your hard work!
2. Be philosophical about the details, as much as every detail may have seemed important in the planning, in the grand scheme of the day you will get caught up in the moment and things will inevitably be overlooked. If there are details that really matter to you both, entrust them to someone else, don’t try to do them yourself on the day.