Got some updated info from Grover with GP&E (thanks, Grover!)
Things related to Will Call have changed some for this year.
Any and all lanes wil have easy access to Will Callhttp://gate.burningman.com/faq-gate.php
What do I need to know about arriving at Burning Man?
About 1/4 mile before you reach the Gate you will come to a set of small kiosks we call the ‘Apex.’ During busy times there will be Gate staff here to direct you. There is an empty zone just after the "Apex" that will allow vehicles in any lane to turn into the Will Call lot.