According to the DVD commentary, the kitchen scenes in this episode were shot in the Ambassador Hotel in the kitchen area that Robert F. Kennedy passed through right before he was shot.
Cordelia recalls the snow in Sunnydale from Amends (1998), although she was on vacation at the time. She could have known it by news (shown in "Amends" itself) and even discussed about it with the Scoobies and Angel himself.
Cordelia is on her hands and knees scrubbing out the pentacle on the floor and says, "We definitely have ring a round the lobby and it will not rub out." This is a paraphrase of a WISK Commercial from the 1970s.
Cordelia affectionately refers to Groo as a "puppy dog". She referred to a boy who was interested in as one in The Harvest (1997), though in a negative light.