A few notes on the animated sequence near the beginning:

It has the first appearance of an Aquan since TAS: “The Ambergris Element”.

It also features an Edosian, though that’s becoming less and less notable.

The Vulcan on the harp strongly resembles Sarek as he appears in TAS: “Yesteryear” down to the jagged eyebrows.

The woman on the couch holding the drink is dressed like Andrea from TOS: “What Are Little Girls Made Of?”