Avoid my mistake when visiting -- Explicitly ask the people you're meeting with where to park and how to enter. The wrong call cost me at least 15 minutes (and, on the bright side, a lovely walk).
Wear dress Shoes that are not only fashionable, but comfortable. I prefer Ecco. Starting wearing them slinging Benz as well prior they make an excellent dress/casual sandal.
If you end up working past 8PM, you'll have to drive to the main entry/exit (North side) because they close the gates at the other vehicle entry/exit points.