The dilema

My downsizing surgery is scheduled for Tuesday, Dec. 30. I will be kept over night and then released from the hospital on Wednesday, Dec. 31. What this means is that I get the pleasure of screwing up some one's NYE party plans. I have called no one and told no one of the date, well, except for the boys from the bar. Why do I feel like total shit for having to impose my recovery on someone else's holiday plans? I will start calling around this afternoon, but you must KNOW I hate making the phone calls.