Translation of unhitch in Spanish

Anyway, we left, as everybody else was leaving and once outside we understood that most people were just crossing the street in order to enter into this other night club. So did we.
We drove to the next spot exactly at noon. We were told that this spot would not be crowded at all during the lunch hour and we were not surprised to find it completely empty without anyone else.
A band was playing Peruvian music while we were waiting for our luggage. The altitude is immediately felt: Dark blue skies and thin air, which won't let you climb stairs without having to take a few breaks.