I had a lot of fun at the event, and there are some logistics that could have been better handled, I think the main enjoyment of these things is to be in the energy of the room amongst us in the Cult of Tesla/Elon. Yes there were some annoying call outs from the crowd but when you have people who have already drunk the Tesla Koolaid and then drank at the open bar, the obnoxiousness necessarily comes with the levity.
Our tour number was very high (1800's) and we very nearly missed the very last tour bus because they didn't announce last call and suddenly jumped the tour counter several hundred points because the crowd thinned out after midnight. We were killing time waiting for a test run, and would have missed the last tour if I didn't look up and see the number jumped suddenly (it was previously taking about 45 mins per 100 and when we went for the test rides, the number was 1400, so we figured we had quite a bit of time even with the thinned crowd). It was worth the wait but I would have been really cheesed to have missed the last tour after being there all night.
To see the Gigafactory in person is to be in awe of the scope (and audacity) of this project. The Tesla engineers were impressive, friendly, and polished in their presentations. It was terrific to see both men and women engineers from different ethnicities. One neat insight they revealed was that they are continually reiterating while this factory is being built out. For example, giant oven had an increase of 80% efficiency which they then applied to the installed oven, and it now forms the basis of the next 4 they will install. The factory is aiming for a net zero energy consumption, so markedly reducing the electricity cost of the ovens is a huge step for this.
Listening to the way each engineer talked about how efficiencies of applying science and engineering to their task to help achieve sustainable energy makes you realize that it's just not a catchphrase for Elon to say for marketing reasons, but a real mission statement that carries through the entire organization. I appreciated how the engineers spoke to the crowd without dumbing down their words, and it's clear they are passionate about their work.
I was very pleasantly surprised we were allowed to take pictures and videos given the restrictions I've heard about for the car factory tours. The pictures and video being posted by members here wouldn't be possible without that. The sheer size of the factory needs to be seen in person to appreciate, and I hope they'll offer torus when the place is built out more!