Often clients have windows that overlook the car park - so remember your first impression might start sooner than you think, as you could be being watched from the second floor window.
My advice is... once you arrive - turn up the song listed below as loud as possible on your car speakers or iphone; and as you cross the car park to the sales pitch, audition or job interview - SAMBA your way to reception.
It will demonstrate that you are enthusiastic, bright, have a sense of rhythm, and that you are able to count 4 time.
One word of warning - as you need to do two steps back as you move a couple forward - get there a little earlier to compensate for the extra time it will take.
As always don't lose it ...use it ....
And here's a link to a perfect Samba and one of my all time favorite youtube vids http://www.youtube.com/watch?v=6D9I03URhtw