Re: hernia after gallbladder removal?
It is possible to get what is called an incisional hernia after a surgery. This is where the skin heals, but the muscles don't heal together, so you get a bulge of intestines sticking out through the weak area of muscles (but still under the skin). This is a rare complication (and can be easily fixed...), but usually occurs with longer incisions. The gallbladder incisions are all only about 1/4 - 1/2 inch long, so they heal very well. Really, it would be a very very rare complication.
After abdominal surgery, you aren't going to want to cough, sneeze, laugh... It's going to hurt. When I was recovery, my mom was doing something extremely funny, but it hurt so much to laugh, so I was laughing at her and she was laughing at me trying not to laugh and it was just a very funny, but painful situation. So check with your doctor about what sorts of allergy medications you would be allowed to take with your post-op meds, if you think that you may need them to help with the coughing.