This is the first time that we learn Tara's surname: Maclay.
In the original script, Joss Whedon had written this in the scene where the team is helping Buffy moving: "Tara is in the closet (no jokes please)".
Steve Rankin and Kevin Rankin, who play Tara's father and brother respectively, are not related in real-life despite sharing a common surname.
Sarah Michelle Gellar starred in Cruel Intentions (1999) and Amy Adams, who guest starred, played in Cruel Intentions 2 (2000) as the same character Gellar played in the original movie.
Apparently, the gang is drinking beer at the Bronze, but they don't turn 21 for another year. Buffy had been first seen drinking in Beer Bad (1999), and Willow in Something Blue (1999).