Nightclub owner Guy Pelly is part of William's inner circle and is unsurprisingly known for his wild ways. He was apparently the driving force behind the "embarrassing" Switzerland trip since he wanted one "last hurrah" before becoming a father. It certainly wasn't the first time he partied with William — Guy reportedly organized William's stag party.
Their friendship dates back to 2001, when they met while fox hunting in England, and they've been involved in each other's life milestones since. William flew to Memphis, TN, for Guy's wedding to Lizzy Wilson in 2014, and recently Guy was named one of Prince Louis's godparents.