Again, take as many pictures as you can. Tell all your friends and family to bring their digital cameras. In this case...
Prepare a list of nicknames of people in the pictures as well as any funny captions that are fitting. Your input is very much welcome here. The most important thing is to have fun taking pictures!
All I can say is take advantage of your digital camera. Buy or borrow as many memory cards as you can. Take as many pictures as you can. I can't begin to tell you how many times a client has stated...
Once all your picture orders are complete, simply ask the Photographer to sell you the complete set of your pictures on a CD-R or DVD. They will gladly do so for a minimal price.
Make a copy with all the pictures you desire for your slide show and pick out your music. The rest is up to us!