I will be serving my duties as a TLG (Technical Learning Guide). This is a role created for MCTs and MVPs and have been very popular and successful in many TechEds around the world.
The last time i did work as a TLG was in Orlando in 2007 and Boston the year before that.
If you going to be there, do check out the Technical Learning Centres and the many hands on labs and instructor led trainings. Also don't loose the chance of catching up on Microsoft certifications exams as it would be heavily discounted.