When Claudia and Steve neutralize an artifact during the Civil War re-enactment, causing the usual sparks and lightnings, an extra in Civil War attire stops and says: "Damn Trekies! Always have to crash the party!".
This is a humorous reference to Jeri Ryan, who played the character "Seven of Nine" on Star Trek: Voyager (1995) and "crashed" the Warehouse 13 cast in this episode as the featured guest star playing Pete's ex-wife Amanda Lattimer.
The filming location for Amanda's Pocono wedding Castle was Casa Loma in Toronto. This location was a Welsh Castle in a previous episode.
In this episode, one character says damn Trekkies. Petes ex wife Amanda Latimer is played by Jeri Ryan who played Seven of nine on Star Trek Voyager. Relating fact - in a later episode this season, we meet Pete's mom, Jane Latimer, who is played by Kate Mulgrew. Kate played Captain Janeway on Star Trek Voyager, Seven's mentor.
The artifact in the episode affects people by creating a hive mentality with Pete's wife, Amanda, played by Jeri Ryan, acting as their queen. Ryan previously played Seven of Nine on Star Trek Voyager who was a character that was a former member of the Borg, a society whose beings answered to a Queen and had a hive mentality.
The ribbon that Capt. Martin jokingly points out as being for "Distinguished Valor in Combat Using Rental Furniture" is actually the Meritorious Service Medal and is given to members of the United States Armed Forces who distinguished themselves by outstanding meritorious achievement or service to the United States.