My first as main photographer will always stand out. The one with the mechanical rodeo bull was also an interesting one!
Customer satisfaction.
Try to relax and enjoy the day. If small things don't go to plan, don't sweat about it. Ultimately, if you end the day married, it has been a success.
Transparent umbrellas to let the light through, but I always bring a few with me, just in case.
My Dad got me interested as soon as I was old enough to not drop his camera! For him it stayed a hobby but it got me interested in creating images. I had my own camera for my 16th birthday. Initially I was developing my own film and printing black and white prints our garage dark room.