I realised halfway through the second half of documenting the trip that it would be pretty cumbersome if I had to explain who everyone was. Hopefully the chart below will make it a bit easier.

                                Arnold --+-- Helen
                                         |
                     +-------------------+--------------------+
                     |                   |                    |
         Barney -+- Kris     John1 --- Linnea -+- Doug2     Didi3
                 |                             |
            +----+---+                   +-----+----+
            |        |                   |          |
Steve -+- Robin     Zack     Chris --- Carmen     Lenore --- Sean4
       |
      Maia
1 Linn's current partner.
2 Father of Carmen and Lenore, but no longer in the picture.
3 A.K.A. "Ingrid"
4 Couldn't make it.