Congratulations! How exciting!
One thing I reccomend to EVERYONE who is planning to marry, is pre-marital counseling. Even if you get along great, agree on most everything and never fight, it is always a good idea to consult with a professional therapist to make sure you are on the same page with all the things you haven't even thought of yet. Yes, it can be expensive, especially if you don't have health insurance to pay for it, but I believe it is so important that it's money well spent.
The second thing I advise is to do a wedding the way YOU want it. There is so much pressure from parents, inlaws, the wedding industry, etc. that many people end up doing things they regret later. Weddings are expensive, and with the economy the way it is, it seems almost foolhardy to spend five figures on what amounts to a big party.
My first marriage, I suggested a potluck. That was quickly struck down by the inlaws as "tacky". I suggested we do a Halloween-themed wedding and to have everyone come in costume. Again, denied. I wanted a small wedding. But weddings seem to take on a life of their own, and tend to grow exponentially... if you invite so-and-so, you have to invite so-and-so, and so on... it gets out of control.
At one point I wanted to just give up, say "to heck with it" and elope, and use the money to put a down payment on a house, or something practical like that.
Anyway, I ended up having a big, traditional wedding, which is exactly what I didn't want... granted, it was beautiful and I had a great time, but eight years later when my marriage ended, I had a lot of regrets about the money that was spent on that wedding. To be honest, it really would have been a good move to have saved that money instead of throwing a big party.
For my second marriage, I had a very small, Halloween-themed wedding on Oct 31. We dressed up as a hillbilly bride and groom, had the ceremony in the goat pen with goats, dogs, cats, chickens, turkeys, and geese in attendance. My dad showed up with a shotgun and we had our own hillbilly shotgun wedding. We couldn't afford rings at the time, so we used one of those big hard candy rings for the ceremony (and one of the goats was trying to eat it). We ate barbecue ribs, cornbread, etc. and then went to a party afterward. It was perfect, and exactly what I wanted.
Not saying you should get goofy with it, just saying that you should have it the way YOU want it, not how everyone else expects it to be. I don't know how old you are, but I was only 26 at my first wedding, so I was more impressionable and prone to give in to pressure and expectations. But by 40, I knew better.