I live in Ohio in the county where Cleveland is located. They call in like 300 potential jurors at a time. (This was common pleas court.) They had us watch an orientation video then we had to wait. The computer picks jurors randomly and you go up for jury selection. If you're picked, you stay and if not it's back to the jury pool. They kept us in a very large room and there were vending machines. Also a cafeteria. We signed in and out. We had Internet access and televisions. We were pretty much free to do what we liked until we were selected. Once you're on a jury, you're on the judge's schedule and he or she will tell you when to come and go.
Good luck! It can be boring but it is a necessary and important part of our system. Oh and an honor. They will tell you that, too. 
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