There will be manufacturer and vendor representatives there to show off the latest models of cameras and to answer any of your questions. You can get a free sensor cleaning (on a first-come, first-serve basis) for two of your cameras and win Camera Mart swag.
There will also be a raffle for a FREE Canon Rebel T3i camera! Camera Mart's Facebook page explains the details of the event, as well as what you can do to increase your chances of winning that T3i (for instance, tweeting or sharing Demo Days or, ahem, writing about it on your blog).
This event is a great way to shop for that camera you have in mind or to get some new equipment (there is NO SALES TAX on most items during Demo Days).
Camera Mart is located at 11 S. Telegraph Rd, Pontiac MI 48341. Demo Days will be on Friday 15 (9:30 am-7 pm) and Saturday 16 (9:30 am-5 pm).