Reply to DJing a wedding?

Does anyone here actually do this? I have only ever played out at clubs/raves/parties but my boss recently discovered I DJ and has asked me to DJ her daughter's wedding.

I should probably get with the bride and groom if they have specific songs they want to hear. Also believeing I would probably want to have a request book available in case any guests want to hear something. If I don't have it, then I hope this place has fast internet! ha

The couple is pretty young too, like early 20's..

Anyone have experience or tips for DJing a wedding?