I just received my catering estimate and I was going over it and at the bottom is a service charge of 20% ($656.04) for my bill.  It goes on to explain that this is NOT a gratuity and a gratuity is at our discretion.  What the heck gives with this large service charge?  They already nicked me for $250.00 for delivery, set up and pick up.  I would like to know if anyone else was hit with this charge and what you did about it.  Did you negotiate it out of the cost?  Please help!!