David mentions a person named McGillicuddy. The recurring character McGillicuddy first appears in the third season.
In the chase scene near the end of the episode. It's clearly shown that a maintenance worker is shampooing a carpeted floor in the Hotel lobby, but the worker is using a floor buffer and not a carpet cleaner, it's shown that he's producing a ton of soapy bubbles that the characters slip and fall upon. Carpets when cleaning wouldn't produce a ton of soap nor would they be that wet to cause people to slip and fall, then go sliding.