CONGRATS!!!!
Let me see, advice with two weeks to go.....
Be prepared for the fact that the day of the wedding is going to go by very quickly. The joke is that photographers call the pictures "proofs" because it is the only proof that the wedding actually took place. LOL Keeping this in mind, I suggest....
1. make sure everything YOU need to do is complete at least three days before.
2. delegate everything, and if you like to be in control, or are overly concerned that something will go wrong (it will), put what you have delegated in writing to each friend or family member. (For their sake as much as yours)
3. things will go wrong...and it doesn't matter. whatever it is, just laugh it off.
4. make sure someone else you trust is in charge of the vendors...photographer, caterer, etc... and make sure that each one knows to talk to your assigned person if there are problems, NOT YOU.
5. Make sure your vendors (ALL OF THEM) have correct, written instructions. If you are using a hotel or a caterer, you should have a document called a "BEO:Banquet Event Order", or something similar (I've worked in the industry before). If you have requested anything MAKE SURE IT IS ON THE BEO. From napkin color to what you are being charged for softdrinks. If something needs to be corrected, don't accept a verbal "ok" from your catering manager. Get the BEO changed, and get a copy.
6. If there are out of town guests coming and you want to spend time with them, do it during the week before the day. You will not have time or energy otherwise.
Okay, I will stop now, before I write a book. Sorry for the ramble
Good luck, and enjoy!