Great PIF and idea. Please don't include me in the draw, but I will give advice nonetheless.
On being married to a woman: You may never want to tell her this, but it is something that me and many of my friends have found. As superior as woman are to men, if she hasn't eaten recently, had enough sleep, or is under stress about something - she can turn on you or be unreasonable unfairly. If you find yourself in a heated dispute that lacks merit have the presence of mind to halt the discussion and make a sandwich or at least buy yourself some time. Most importantly, don’t hold a grudge once the dust has settled and don’t lose your cool or say anything you may regret before the sandwich etc.
On the big day: You probably won’t be able to see her on the day or right before you walk down the aisle. She is going to have a lot on her mind. So, make sure that you get a nice bouquet of flowers (ideally you know her favourite flower). A few minutes before you take your place and before she gets ready to walk down the aisle, ask a groomsman, bridesmaid, her dad or anybody else to give her the bouquet with a quick 5 or 6 word note from you. It will do wonders to help her feel loved and thought of.
Razors don't shave people. People shave people!
There are three critical types of moments in life: Times when we should use opportunity to be enamoured with finer details, and times we should ignore the minutia.