I made each of my playlists at least 1 hr long just in case, and my 'dancing' list 2 hours long. (we obviously didn't use all the music, I just wanted it to be REALLY padded)
My playlists were:
Guest Seating (Disney love songs from 'On The Record'
Entrance (a handful of songs picked by DH for our entrance & wedding party entrance)
First Dances (DH & mine, parents)
Eating/Dining (a slow mix of oldies, like Sinatra, and current crooners, think: Buble, Jason Mraz, etc, for a soft conversation-ish mood)
Dancing (upbeat and fun, kicked off with good disco and a few dance faves, we reverted back to this playlist inbetween 'events')
Mickey & Minnie (Fun Disney songs, started with our Mickey/Minnie dance song: Some Day My Prince Will Come, and followed by 'Minnie's Yoo-hoo' & such for taking pics with Mickey/Minnie)
Cake Cutting ('Ain't That a Kick in the Head', 'Sugar Sugar')
Anniversary Dance (2 songs)
Final Dance (a trio of songs played in order: 'Hey Jude', 'Sgt Peppers', and 'All you need is love')
We had DH's uncle work it. We also used our BEO for approx times/order of events. We typed up a list of instructions and he did awesome!
I have to say my favorite thing was being able to put some of my fave songs on there, and taking requests from friends/family for favorite dance songs!