After all that anticipation -- can you believe it? -- nothing bad happened. Nico and Leo were too busy sledding and playing and opening presents, and everyone got along great!
The worst thing that happened was that (John's partner) Mike got a temporary stomach flu and wasn't well enough to be in the family portrait:
My new niece also missed being in the portrait since she isn't quite out of the hospital yet -- but she's doing great, and her big sister expects to get to meet her soon.
I guess the closest thing to a faux pas was when my brother John remarked on how cool it is that we're increasing our family's diversity by adding a "corridor Mormon" for the first time in generations. (The rest of us are either "mission-field Mormons" or not Mormon at all -- and if you don't know what that means, then read this piece on our family history.) My sister Laurie then explained that her new fiance is from Moscow, Idaho -- which is so far north that it's hardly Idaho at all, it's practically Eugene, Oregon! Good thing we didn't mistake him for a Utah Mormon... ;^)