Hooray for continuity, and Roger Korby getting name-checked. Chapel ends up marrying him (see TOS' "What Little Girls Are Made Of"). Also in HFC - Vulcans taking suppressants to deal with the smell of humans was established back in Enterprise (see "The Andorian Incident").
Lots of fantastic little character moments throughout for many of the cast. Spock and Chapel getting the majority of them, but almost everyone got some screentime this week.
That scene just before the opening credits was great - the Spock POV as he's waking up, the explanation of what happened, the TOS-esque musical cue, Spock staring in shock at his now-human reflection...and then a return to modern Trek, with the curse cut short by the opening credits
Anson Mount still the best thing to happen to Trek on TV in forever.
The VFX team had another good 'un. So did the costume department.
The folks coming up with the episode titles are having some fun this season, with "Charades" referring to the effort in hiding Spock's changed nature from his future in-laws, he and Chapel dancing around their mutual attraction until the end of the episode and the game itself that Pike suggests while vamping for time during the ceremony.