Good luck finding someone to share. When my travel companion cancelled, I contacted the driver I'd booked. He told me that if I don't mind waiting 35 minutes, I can join a group of 5. Yeah, cheap! Now I'm sort of hoping he'll (or I'll) find someone to share on my return the morning of the 27th....but that timing has to be rather precise as I don't want to leave earlier and can't be late!