here's to a lifetime of love!!
A few tips I learned from my own wedding:
(I haven't read the whole thread, so my apologies if anything has been repeated)
Using facilities on "off" days (Like Friday as opposed to Saturday or Sunday)can save you a ton of cash.
If you want real flowers on the cheap...order arrangements from your local supermarket floral section...at least for things like centerpieces, bridesmaids bouquets and groomsmen's boutonnieres. They're at least half the cost of florists and still make some resonably decent arrangements. Also, see if your town has a wholesale flower mart and you make your own arrangements...even cheaper.
The smaller amount of people in the wedding, the cheaper the stress and cost for you. Keep the bridemaids/groomsmen/attendants to a minimum.
If you are getting married in a church/temple...many alters have flowers or plant arrangements on them already. Ask to see if they can leave behind any floral arrangements left over from worship services.
Fresh flower decorations on a cake are waaaay cheaper then flowers or decorations made of icing...way less labor.
Consider hiring a photography/videography/music student from your local college for services. Be careful though...ask for work samples first.
Don't go the limo route, rent a nice full size car for the day. Black is always elegant, regardless of the type of car. You may even be able to get it on a weekend rate.
Remember...most chain tuxedo rental places will give you the grooms tux rental free if you rent the other groomsmens tuxes there.
Reherasal dinner? Have a family style potluck at the church after practice (if youre getting married at one) or have a barbecue at the park or over a relatives house...less stress and more fun!
Make your own invitations...or don't sleep on Kinko's. They have a really nice selection of invitations for every budget imagineable.
I'll be back if I think of more