its in my contract, you want extra hours, i get extra pay. Same here. If they want me to extend, it's only if I want to, if they pay me and if the venue allows it. As for the final few songs, depending on the event I get on the microphone and let them know they only have a few left then announce the start of the last song for the night when it comes up. Then as the last song finishes, I simultaniously switch off all the lighting effects. END OF NIGHT!!