In the post-credits scene, Mr Poopybutthole says that season 3 will arrive "in, like, a year and a half or longer". This final episode of season 2 first aired on October 4, 2015; season 3 premiered on April 1st, 2017, three days short of a year and a half later.
The first creature the cyber photographer talks to is a Mugwump, from William S. Burroughs' Naked Lunch.
When Rick visits the bar near the end of the episode there is an alien who looks like the Grinch sitting behind him.
An alien resembling Q-Bert can be seen in the background when Beth is talking to Birdperson.
The title of this episode is a play on 'Wedding Crashers.'