Family, friends and photographers alike look forward to the moment the couple joins hands around the cake knife and cuts the first slice of cake. Not only will your guests finally get to taste the gorgeous creation they've been eyeing throughout your reception, it is a classic wedding moment, up there with the first kiss and first dance. Additionally, after the cutting of the wedding cake, your guests (namely the older crowd) will know it's okay to leave your reception.
Make sure your caterer gets 15 minutes lead time before you head over to cut the cake. Even the swiftest trays in the catering biz will need that much time to refill champagne glasses, and ready the cake table with all the necessary cake cutting accoutrements (like essential plates and forks).