As if on cue...
To echo what was mentioned above, your experience will depend on the pathologist's work environment. There is the anatomic pathology side, which is the bread and butter of most pratices. It's mainly surgical pathology and cytology, so you'll likely be spending time on the microscope looking at cases. If you can identify the organ you'll be in good shape. In some practices the pathologists gross (i.e. process) the surgical specimens, in others that work is done by skilled technicians. You may spend some time in the grossing bay observing how tissue is dealt with. Much of it is repetitive (skin shaves, gallbladders, etc.), so hopefully some more interesting stuff will drift through (colectomies, Whipples, laryngectomies, hemicorporectomies, etc.). Much like eating sushi, it will help if you set aside your disgust to see just how awesome this stuff is.
If the pathologist is doing cytology, you may get to accompany him/her for FNAs (fine needle aspirations). You'll go to patients and aspirate small quanities of their tumors/masses for identification. Yes, pathologists actually see patients sometimes.
On a related note, if your pathologist is into hematopathology, you'll be seeing wall-to-wall blood. There will probably be some bone marrow biopsies, and you may get to accompany him/her on acquiring a marrow biopsy.
If you're really lucky, there will be an autopsy. Should the opportunity arise to see one, jump on it. Make sure you eat something beforehand, don't lock your knees, and if you feel faint just leave the room. Almost everyone has a fainting response to gore at some point. There's no shame in it.
Also bear in mind that pathologists run the hospital laboratories, which include clinical chemistry and microbiology. You may get tours of those areas, so don't look surprised. The blood bank is also run by pathology. Think blood banks are just ABO pos/neg? Ha ha, think again. Transfusion medicine is one of the most skull-busting areas of pathology practice.
My best advice it to just be enthusiastic. The sheer number of things that can go wrong in the human body is staggering, and teasing them apart is pretty damned cool. Be the ball.
Some resources for you perusal:
The College of American Pathologists
The United States and Canadian Academy of Pathology
The American Society for Clinical Pathology
The American Association for Clinical Chemistry
The American Society for Microbiology
The American Society of Hematology
The American Association of Blood Banks (Not actually called this anymore. The term "blood bank" is out of vogue.)