The girls go to a big box store to pick up party supplies. The store, Cloud 9, is the same fictional store featured in Superstore, which was created by Justin Spitzer. Spitzer is married to Good Girls' show creator, Jenna Bans.
The scene when Dean and Stan are watching a football game and discussing marriage briefly shows, twice, the football game in question. The two teams that are playing are the Toronto Argonauts and Montreal Alouettes of the Canadian Football League.