My work, quite simply... Making pictures is everything to me and my portfolio is the thing I am most proud of.
Don't forget to allow yourself some time to enjoy the day, don't fill your day with so much that you spend the whole running to keep up with the schedule.
Umbrellas! I live and work in the Lake District, I've shot a few rainy day weddings. As long as you've got enough umbrellas, there's nothing to stress about.