Lee Edwards Entertainment sends a booklet months ahead of time to fill out the songs/genres to play, songs to put on the 'do not play' list, etc. We filled out the information and when we got to the wedding, the DJ didn't have several of our songs, not only that, but most DJs use a computer to download/play what you want, this one had CDs! So, when he didn't have our songs, he couldn't get them, and trust me, it was several songs, one of which is 'Don't Stop Believin' by Journey (one of the most downloaded songs of all time and rated the 'best song to get a crowd pumped' by MTV DJs). This was a song we specifically requested as our last song of the night and they didn't have it or our backup song to that one, therefore, the DJ stopped playing music while he looked for something else, everyone was just standing there waiting....
Pros: He had little crowd interaction, which was what we wanted.
Cons: Ignored our requests