Bulldog, Please don't confuse 'madhouse' with 'zoo'.
Point taken. Being in the zoo long enough will lead to the madhouse. The last time I was in the valley was 4th of July week 2007. I've seen Times Square less crowded on a Saturday night.
Sounds like the time I was at Tunnel view when it got hit with 3 tour buses and 2 valley tour trolleys at the same time. Twenty minutes later when they had all left it was much more enjoyable!