Translation of frivolous in German

It was after midnight when we finally could go to bed and rest a little. It was good that the search for a better room turned out to be funny and amuzing so that we did not feel sorry about it.
A year later we decided to make another trip. We have both been to Mexico and to Cuba, and the year before we were in South America, where we have visited several countries for five weeks.
There was an extra seat available (the last one apparently). We were so glad. 45 minutes later we sat in the place, eighty percent of the plane was empty. They really need to update their system.