When I went I tried to get shots of the insides of those kettles but they didn't come out very well. I got an acceptable shot of the top 'plate' in the boil kettle but couldn't get a good shot of the impeller/blades in the mash tun (which was empty at the time).
When they asked for a show of hands of who didn't like the sour almost everybody raised their hand. I was one of the only ones in the 'undecided' camp. I didn't like beer, whisky, or coffee the first time I tried them but love 'em all now, so I'm not ruling out sours just yet. Might be an acquired taste.