Welcome to this network where none of us want to be but welcome all the same. Love your attitude Alison, you are beginning this 'journey' with the best mind set you can. I something's get sick of other people telling me that being positive is the best medicine but I'm sure not going to go around with a defeatist attitude.
My chemo was 4 by 3 AC and 4 by 3 Docetaxel although my last Docetaxel was cancelled so I only had three. With the AC (similar to FEC) I started to feel the side effects around day 3 to 4 and they lasted for at least the first week. The second when your immunity reaches it's bottom level, you're supposed to be very careful. I felt quite good that week but I tried to avoid crowded places. Perhaps you can check with your Oncologist and if you are very careful to use a sanitising hand wash and avoid touching things like hand rails etc., you could go to your son's event. Not sure about the airport though as there are international travellers that you may come in contact with who may be carrying germs you shouldn't be near. I never thought I'd be this paranoid about hygiene but your risk is very real. I ended up in hospital with infection twice during my chemo.
Having said all that, you may not experience side effects that badly and you may cope very well in the 'low immunity' week. Everyone is different as they say. But gear yourself up for Docetaxel, I found it was a nasty drug.
I wish you wellness for your chemo Alison.
Love Janey xxx
PS you look great for 55!