I had my ileostomy done lathroscopically. I can tell you that the scarring is minimal. I now have a 1/2 inch scar under the sternum, another one about 1 inch long under my bellybutton. Both are hardly noticeable. After surgery, my upper body was sore for about a day and a half, as that during surgery, you are pumped full of gas to "inflate" you. This allows the surgeon to maneuver the camera and instruments inside you. After the surgery, there is residual gas that takes about a day or two to dissipate. I was up and walking about two days after the operation, and home after a week. The first two days the nurses got me to sit up and bend my body up and down while holding a pillow against my chest. This supposedly was to help the gas dissipitate, as well as get my body moving again.
One VERY important thing. Make sure you get the location of your stoma marked out beforehand, where you want it to be. Keep in mind belt line and clothing. The ET nurse, or qualified person, should go over this with you before surgery. I myself wasn't aware of this, and none of the hospital staff went over this with me beforehand. I never had my stoma marked for a good location. Now my stoma is right next to my bellybutton, so swimming for me (wearing a bathing suit) is out of the question. The surgeon placed it too high on me as far as I'm concerned. Be sure to get your stoma mapped out beforehand.
"The world hates change, yet it is the only thing that has brought progress."
"He who rejects change is the architect of decay. The only human institution which rejects progress is the cemetery."