If you have the time it is worth it for the free food
We went and they have a little food spread out. The rest is pretty commonn sense things. They show you were to drop your car off for service, how to check in with a service writter, give you a brief tour of the work bays, and just answer any question you might have. it is probably not with the time to take off a day from work, but if you have nothing better to do it could be fun.