Does BB king usually sign autographs after a concert?

I am going to see BB king at the Hershey theatre and I was reading online that he is pretty good with signing autographs. I just wanted to see if anybody has any tips on getting an autograph from him. For example is it better to wait outside by the bus? Or if anybody has any tips on the Hershey theatre in general, like where do the artists exit to get to their vehicles? Thanks