People tend to check in during these times:
Texas needs to catch up. Illinois prints your license on the spot. Hell, even Sam's Club prints your card out on the spot.
No personality. Before you take your test make them laugh. Have fun. Don't let them intimidate you.
Ah why do people have to be so rude here. Talking about the lady at the very first desk.
Around 2:30 is a good time to go on a Friday (from my experience)