Consider not having a dinner reception. Opt instead for a brunch, afternoon tea, cocktail party or dessert party.
Use silk flowers. They are always less than fresh flowers, plus they can be rented!
Decorate with more greenery and baby’s breath, and less flower blooms.
Make your own invitations. There are software programs available that can help you with this task, and you can purchase wedding desktop publishing paper.
Check out local universities for qualified and inexpensive musicians, photographers, and video-graphers. Professors will be able to point you to the best students in the program.