Weekdays see more filming than weekends but it's not like you'll actually get to see filming anyway. We did the tour on a Wednesday (they told us they were filming Shameless, The Fosters and The Big Bang Theory that day). We did get to tour the Big Bang Theory set as they had just wrapped up shooting before our tour. There were guys there changing out the sets. We did the last tour of the day (3:30) and hit the rush hour traffic going back to Anaheim. We left WB at 6:30-6:45 PM and didn't get back to DL until at least 9 PM. Hated the LA traffic.