I haven't yet, I found out a long time ago to take a best guess at when the good days wI'll be and put in for those days off. Glad I did, I have this Friday through Monday off and just found out today that our job is expected to work all weekend. I don't have to though because these days have been scheduled for months.
I'd like to shoot my buck on Friday so I can go ahead and work the weekend for the overtime.