A couple of show recommendations: 1) see Andy Williams. Regardless of your age (I'm 38, DW is 36, DDs 2.5 and 6 yrs old), if you appreciate music, he's a national treasure. We saw his Christmas '03 show, and it was amazing to hear a 30 yr old voice in a 70 (+?) yr old body.
I've heard that Shoji Tabuchi (sp?) may not continue performing too long based on major arthritis problems, so that's a definite possibility of a show to see while it's still around. A disclaimer, though: "I've heard" is all I can say about this. I have NO actual knowledge that this info is accurate.
My experience with the bad traffic: yes, it is heavy. But I don't know whether it is the average age of the crowd, or something in the water... most drivers are VERY courteous, and you can get around without much problem even in busy times... as long as you don't get in a hurry. Get the feel for busy times, and leave EARLY!