On the afternoon of our trip, were contacted to sign online waivers, which was no problem, and we later received acknowledgement that they'd been received. So we assumed all was set for the trip later that day!
In the evening, we turned up at the appointed time, and the specified place (in the middle of nowhere), but it was pitch black, with nobody around. We waited for 15 minutes, but having had no message or email either saying "Where are you?", (perhaps we'd gone to the wrong place), or "Sorry we're delayed" we gave up.
48 hours later have still heard nothing at all. Very unprofessional and very, very disappointing.