So you can never have any thing involving foods because, vegans, carnivores, allergies [which covers so much these days] Lets change everything for 1 or 2 people.Unless you have some little Muslim girls in your GG troop whose parents won't let them celebrate Xmas. Then you have to leave those little girls out of your parade and that's unkind.
Also no celebrating greed? That is messed up
It's what we do in the Canadas, much like in the India they cover each other in colored powder for Holi. Just play along. I say this as an anti theist.