>>11 Likely always on a school day, maybe always on a Friday, but I don't really know outside of that.
>>12 Yes, it is every year. Next year you can definitely do it, just email your teachers a few days in advance so that they know what is going on. If you have a GSA/Alliance and they help with the event, you probably won't have to. Duct tape helps with the silence bit but it feels really unpleasant xD