Flitch Day used to be my least favorite, but now that I have a son-in-law whose birthday falls then, it can hardly be my least favorite anymore, then, can it?
Oh, I'll be honest - I just love holidays - altho I don't love the commercialization of any of them.
Just say "no" to all the demands, and do what makes you feel happy on any given holiday (or just 'day', for that matter).
I just hope I'm not in the minority, tho, because any event that lets me get together with family is a good one!