I'd play it by ear but not make any plans you can't get out of easily for the next day. My kids are still quite young and there's no way they could handle it. But, I would have thought it really cool to stay up that late as a young teen. I would have been able to handle it and sleep in the next day. My young kids can't sleep in, so there's no way we would even make EMH that end at 11pm. You know your kids best to know how they'll do on less sleep. If they all want to do it, then I'd go for it.