Don't worry about missing me, I haven't been super active on these forums before, and I was just the volunteer at the Handelabra section of the GTG booth (tall guy, short hair, glasses, Ravenclaw lanyard). I spent the later half of all four days there. Got to meet all the Handelabra folks except MigrantP (obviously). Great group of people. Jean-Marc and I hit it off especially well.
Saturday was probably my favorite day at the booth, because we had a lot of the costumers coming around. Prime Wardens Fanatic, Expatriette, Scholar, Visionary, Luminary, Matriarch, and Super Scientific Tachyon stopped by the booth, plus two of the Handelabra folks were also in costume (Crista was Super-Scientific Tachyon as well, and Jennifer was a flip-side La Capitan). Apparently there was another flip-side La Capitan and another Matriarch roaming around, but I never got to see those two. I did run into a Greatest Legacy and a Baron Blade outside the GTG room when I was off my shift and headed to the charity auction.
The booth had three major groups of people stop by.
1) superfans who already knew about and had everything
2) people who knew about Sentinels as a card game but had no idea the app existed
3) people who knew nothing about Sentinels at all
We made a good impression on most of the visitors. The phone version was especially popular, probably because it was the most eye-catching of the three we had available (Steam / tablet / phone). There was a TV going in the upper corner of the booth, rotated for portrait mode, playing a 10-ish minute demo video that included a full battle of four heroes against Baron Blade in Enclave of the Endlings.
Several people liked the game so much that they whipped out their phones and bought it on the spot. Mobile seemed to be selling better than the Steam keys we had available, though I did see several people buy DLC packs and base games that way. One customer in particular came up and asked to try the full version (she was familiar with the base game), so I set up a PC for her to do that. After getting wasted by Apostate and asking me "how do I beat that [unpleasant adjective]", we talked strategy and she decided to pick up the season pass on the spot.
Christopher stopped by the booth for a few minutes, which was pretty cool. I chatted with him briefly about how things were going and how Handelabra helped me get into Sentinels; wanted to make sure he knew they were helping draw people in. Great guy, I can see why so many people like him.
One thing that struck me was how much networking went on at the show. We had at least half a dozen people with press badges or exhibitor badges coming around and asking about corporate issues that I couldn't speak about, so I passed them off to whichever Handelabra employee was at the booth with me at the time. Made me kind of wonder how many networking types came around during the early shift (or even before the place opened)!
We also had one visitor each lobbying for Xbox 360 and Windows Phone versions of the game.
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I also stopped by the GTG room a couple times off-shift. One of my friends was demoing Compounded in there, plus I went to the charity auction and had fun mostly just watching that. I did bid on and win Dark Watch Nightmist, though.