OT: Holy [censored], I'm Getting Married!

The wedding is this Sunday, and jesus... I can't believe it. I'm 24, which is apparently young for nuptials, but I've been with this girl since junior year of high school, so I'm quite sure she's the one.

Wish me luck (not so much with getting married, but more with not falling out of the chair when they sing "Hava Nagila").

Any of you old married men wanna throw out a word of advice that you wish you had when you first took the plunge?

PS - Kinda funny/nerdy/obv, but I found a thread where I used OOT to bounce proposal ideas off:
Putting Marriage Proposal Ideas into Action...