Anywhere towards 15 hours / midnight is the maximum hours that focus artist will cover in this package.  Team generally leave after the dance floor opens, with the permission of the client. 

Yes. 

30% deposit upon booking, the remaining the week of the event

12 to 20 weeks, depending on project. Current 2019 / 2020 season average turn around time is 5 to 7 weeks, subject to change based on season.