When Johnny is cradling his daughter in his arms near the start of the episode, the blanket position keeps changing between shots. In the over the shoulder shots, the blanket is not around the baby's face, but in the front shots it is hiding the baby completely.
In the epilogue, Johnny mispronounces the actual expression "champing at the bit" by the more common understanding, "chomping at the bit."
There are no direct flights to Okinawa from any airport in the US.