the term "cake day" just makes me think of r*ddit. I've seen Lemon Day going around, but we probably want to avoid affiliation with lemon party.
not that we can tell anybody what to do anyway, and each instance could even have its own. anyway, it needs to be something that obviously means "anniversary" and doesn't require explanation otherwise it'll just be annoying
There are normal cheeses, there are lactose free cheeses and vegan cheeses as well. I think that's all possible bases covered? Beside, cheese is delicious (I have yet to have a delicious vegan cheese but I'm told they exist - probably didn't get here yet or too pricey for me - but that's beside the point :D).