I like this explanation of the Shavuot dairy custom:

The Shulchan Arukh writes in Yoreh De’ah that we should make a [festive] meal at every completion of a mitzvah. . . . So we should make a meal [on Shavuot to mark] the end of counting the Omer. But we can’t make this meal with meat, because the reason wouldn’t be recognizable — it would look like a regular meal to honor yom tov. So we make a dairy meal.
– Beit Aharon, cited in Mat’amim.

I can’t aim for all-night, either; tomorrow morning I have to drive to Boston to see a new specialist, as part of the ongoing search to figure out what caused the strokes. (I’ve been telling myself that this year, I’m looking for a slightly different form of revelation…) I’m not a night owl, but I like all-nighters of this kind. I liked all-nighters at the hospital when I was doing my chaplaincy year, too. There’s something about middle-of-the-night consciousness that just can’t be duplicated during the day. Well — there will be other years.

Chag sameach! Wishing you a sweet one.