Rumple, Henry, and Emma are in an airport set used on Lost (2004), another television series by Once Upon a Time (2011) creators Adam Horowitz and Edward Kitsis.
The increased number of Lost (2004) references in this episode is likely due to the reunion of Once Upon a Time (2011) creators Adam Horowitz and Edward Kitsis with actor Jorge Garcia who played the giant and was a main character in Lost (2004) as well.
When Tiny is at the tavern talking with Jack and James, you can hear what sounds like the theme to Pirates of the Caribbean.
C. Ernest Harth who plays Anton's brother was in several other episodes. One episode he played a burly guy and in another he played an Ogre.