It was indeed like a sauna in there. A bigger venue would have been better, or one with more air in. I went with my husband and two friends; one left before Frost* started as he couldn't handle the crush in there, and my husband had to go out for air a couple of times. I was fortunate to be in an occasional waft of slightly cooler air from the aircon by the mixing desk, but struggled to stay upright as there were 2 burly blokes in front of me who kept inching backwards into where I was standing, and as my heels were against a step there was nowhere for me to move to. Now I know what a sardine on a barbecue feels like.