An acquaintance of mine back in the 80's had a burst appendix. He was in the hospital at least a week and had a bed and medical apparatus set up in his living room at home where he was bedridden for nearly a month with nurses visits nearly every day. He nearly died from the infection.
When I was 19 years old, I had appendicitis. The pain wasn't acute, and presented as a feeling of fullness and pressure. After taking Tylenol and sleeping on it for a few hours, and then it keeping me up for the rest of the night, I finally went to the ER early in the morning, about 5am, on the chance it was something serious, but expecting it to be just some unusual GI distress and to be sent home.
That's when I spiked a fever, and started vomiting. Labs came back with elevated white cells etc.
They admitted me for an appendectomy, but being otherwise young and healthy, I kept getting bumped for emergency surgeries and waited until 2pm to go under the knife. By then it had burst. So I wound up staying in the hospital for a week on IV antibiotics.
No complications otherwise.