When my daughter began German classes in middle school, we could not have imagined how much the experience would add to our lives. Four years later, we hosted a student from Germany; we were preparing for my daughter to go there when the coronavirus pandemic spoiled everyone’s plans. In the summer before she started college, we decided to re-create part of that canceled tour, and I got to go, too. We knew the student who had stayed with us, but now both of us would be staying with her family, so we were excited and a bit nervous. The wide smiles and warm hugs that greeted us in Frankfurt set the tone for a marvelous adventure. We usually sleep flying east and stay awake flying west to help us adjust to the new time zone. With that in mind, I told our host mom we could hit the ground running, …