Well I'm no expert but it seems to me that the gall bladder usually comes out. But there are alternatives like surgically removing the stones, using ultrasound to break them up, or using a chemical to dissolve them.

When my wife had hers out about 20 years ago she was the first one to have it done laparoscopic style at our local hospital. She went in at 6:30 AM and I brought her home to cook supper for us that night cuz we got really hungry through the day. J/K about the cooking part but she was home that evening and feeling pretty good. She was happy to be able to have it out that way rather than the conventional way.