My Favorite Part
The course is gorgeous - there is nothing finer than running across the Golden Gate Bridge. The course has elevation gains so it can be a nice challenge for advanced runners. Early start time also helps with a cooler (fog aided) run.
There isn't really much happening in terms of energy (bands, etc). Neighborhoods are not very lively - at one junction there were cars honking (in anger) at racers for blocking traffic on Geary Street.
Tips for Future Participants
Train for hills. Take a moment to take a mental (or cameraphone) picture of the great views to and from the GG Bridge.