Our work hours are week days from 6pm - 9pm and 12pm - 5 pm on Sat. We sometimes have meetings on Sunday for anyone that wants to go. It's usually nice and quiet for the programming team to get some work done.
Our school supports our robotics program pretty well. They are our main source of funding and we've got shop setup at our school's auto tech lab.
We don't have that custodian rule thankfully. We can come and go pretty much at any time with a mentor/teacher.