If you are going to the Software Industry Conference
Software Industry Conference (July 16-18 Boston) there is a company there that has 3 AdWords Experts present, they will spend time reviewing your AdWords account and giving your advice on how to increase your conversions, click-throughs etc... all for free. They are very good, I met with them last year.
The company is SharewarePromotions not sure if you need an appt or if you can just walk-in.