It turned out to be far far easier and less of an issue than I expected. I stuck the two new bulbs in, flipped the switch to on and they worked great! Except then one of the bulbs in the other fixture went dark. FUCK.
I ordered a replacement from Amazon and sent a note to Sheri explaining that she owes me $48.94 and I expect a fix. I know she'll do it. I don't know when, but I do feel better knowing I have a way to have light while she does.
I am unpacked. Everything is put away or put in dirty clothes hamper. My body is feeling way better. My one toe is the only open pain issue. I love that even as old and out of shape as I am, I can still bounce back in fairly short order. nice.