I once showed up for a 2 pm gig at the wrong branch of a NH chain. Luckily, the correct location was only 15 minutes away and scheduled for 2:30pm. Saved. Another time I showed up to find the venue double booked; they asked me to stay and re-scheduled the other person. Their error, but still a possible nightmare.

Jim, contact that location and offer to play ASAP or the next scheduled job (if there is one) for free. A goodwill gesture will go a long way.