My son was sick in the night and even though is no school I still think it is polite and courteous to follow the 48 hour rule or 24 at the very very least. We were invited to a friends bbq for her sons 8th birthday so i texted the mum and explained and said would it be ok for my 13 yr old to come on her own as she is good friends with the birthday boys sister I explained that my son couldn't come due to being sick and that I would come along a bit later when my hubby was home to look after my son. Anyway my DD went without me and she said that a few of the mums were talking about me behind me back and saying what an excuse and how rude am I just coming for the food!!! This then sparked a discussion about the 48 hour rule and how nobody follows it and we should either have all come or none of us. My son is really annoyed at missing his friends party as he is fine this morning and maybe I should have just taken him as no one would have known but I honestly thought I was doing the right thing. Also I didn't just want to leave my dd there indefinitely so by going half way through I thought was the most sensible thing. I sort of called their bluff and when I turned up and they said they had saved me some food and I said don't worry about me I have already eaten. AIBU I was so sure I had done the right thing??