Alright, so that was pretty awesome. About 30 people showed up for the Articuno, we beat it handily. Only a few people manged to catch it, I was not one of them.
We all immediately went to an adjacent park for a Lugia, about 50 people showed up for that one. Lugia is HUGE, our Pokemon were so tiny. Lugia is also wayyyyy tougher than Articuno, most of us were on our last legs when we dropped him. Again, only a few managed to catch the beast (1988 CP) and even with golden razz + great curves for all 10 balls he didn't even humor me with a fakeout catch
Most people were heading to the other side of town for another Lugia, but I've got to crash. All in all, it was just super ****ing cool to see that many people mobbing this early in the morning-- felt great. Catching these ****ers will definitely be a numbers game. Base catch rate is something like 2%, so try not to get discouraged if at first you don't nab them.
Edit: I did catch a Snorlax walking out of the park though