I have to take the 3 hour diabetes test because I failed the one hour

!!! Those that had to take the 3 hour, what did you do to pass the time? I don't want to have to sit there for 3 hours but I know they draw blood every hour. Just wondering if you all sat there the entire time (and how bad was it) or did you leave and come back each hour to have your blood drawn. I am dreading this!!!! I'll probably go and take it once school is over and I won't have to take off work to do it.