As for likes and dislikes:
The ending of a wedding (when everyone is there to celebrate the end of the wedding, and there's so much love in the room at that point)
That 1 second of "yeah" you get from people when you play a song, and 2 seconds in they realise what it is and love it
"Nice weddings" - you know those couples who just have nice friends and family, they make for amazing weddings!
The drive home after a great gig - it's nice to look back and reflect on how well it went and start winding down
The brides who book me because they've really bought in to what I provide - I really look forward to those weddings.
"We've always done it this way"
Short room turnaround times. I much prefer to set up leisurely at the begining of the day
The setting up - especially in the summer when I end up sweaty
Drunk guests who become rude and obnoxious
People leaning over my equipment with a drink in their hand (they'd be the first to complain if it all went quiet and dark because they spilt it)
Suppliers who don't care about the wedding and want to get home as quickly as possible
Kids - sorry, but young kids and weddings don't mix, unless you've got proper entertainment all day for them, like an on site creche. Otherwise they get bored and just round around/scream (usually during the speeches)