In 1978, when I lived in Minneapolis, I had appendectomy on a Friday night, was walking by early Saturday afternoon, went home Sunday afternoon, and back to work Monday morning.
About 3:00 AM, I was able to walk to the bathroom under my own power. I had the nurse put the IV on a stand with wheels. To get out of bed, I had the nurse crank it up all the way then hold her arm up so that I could get fully upright without straining my abdominal muscles. Then, I was able to get onto my feet and walk very slowly to the bathroom, pulling the IV stand behind me.
I would have been walking Saturday morning except for the IV. Once the nurse took the IV out of my arm, I walked up and down the hall several times, very slowly, and was completely shot when I went back to bed. A couple hours later, I did it again and it was easy. I even went up and down the stairs and chinned myself on a door, being careful not to tighten my abdominal muscles.
Sunday morning, I rebelled when they gave me only three cubes of gelatin for breakfast. I said, "If you don't give me more to eat, I'll walk to the restaurant on the corner, and you know that I can do it!!". So, they gave me some oatmeal. I was determined to leave the hospital that afternoon, but I had more work to do before I could do it.
Getting in and out of a chair was still difficult, so I did it over and over until it because easier. When the doctor arrived, I was in the lounge. I quickly stood up, quickly walked over to him, and told him that I was ready to leave. He told me that perhaps I could, but he wanted to examine me first. He did, and discharged me.
I took a taxi back to my condo. I had a suitcase with me because I was planning a trip just before the attack. While a couple residents watched me, I carried my suitcase upstairs and to my unit. They were quite surprised because they had intended to visit me at the hospital that afternoon. Monday morning I went back to work. Two weeks later, I was running again.
How quickly you will recover depends on how hard you work on recovery. The surgeon told me about a swimmer who entered a meet less than 24 hours after having an appendectomy. He wasn't surprised that I left the hospital so soon, but the nurses and other people were.
Do not baby yourself. Unless there are complications, it should be possible to leave the hospital and resume most normal activities within three days of the surgery. Just be careful not to strain your abdominal muscles too soon.