Well, I got an early Christmas present today from Mr. Perl - a true gem of a Wednesday puzzle! I LOVED the theme! CRYMEARIVER (17A: 1955 Julie London hit) opposite CRIMEARIVER (62A: Certain waterway to the Black Sea?)? Beautiful. PARASALE (21A: Glide, in a way) vs. PARISALE (55A: Left Bank quaff?)? Lovely. And GOBETWEEN (33A: Intermediary) paired with GOBITWEEN (44A: 11- or 12-year-old Mongolian desert dweller?)? Hilarious. Boy, oh, boy… thank you for that, Adam.
And aside from that, we see some fine cluing too, as in 42A: Eye-opener? (ALARM) (This took me a while!), 52D: Bank security figure? (LEVEE), and 54D: Horns in on? (GORES). Sure, there's plenty of the usual stuff, like EPEE, NEE, NOBIS, EST (fooled again by the clue here!), etc., and there's even some stuff that is downright obscure - I'm looking at you, OOLA.
The NE had one of the trickier parts, with IQS (10A: Figs. on a bell curve) crossing QEII (11D: Royal who's notably a crossword fan, for short). I was worried about that until I got the double I on the down, and then it all made sense.
Merry Christmas! Happy Hanukkah! Peaceful Kwanza. Happy Solstice!