Interesting sir, I suspected as much, especially after the Superbowl. I think somebody posted something similar about the carts there.
Man, and you are so right. They were smack dab in the middle of the busiest walk areas. I think they must have been schooled in facial expression. Seriously, they had these giant grins as they were looking at people. It was a very Stepford look. And I have to say, the group they had out looked like they were from the Spanish and downtown congregations.
There were other rather seedy looking characters out trying to get people to take a paper that looked like a $100 bill. One guy behind me took it and was reading it outloud as we were crossing the street. It had a bunch of scriptures on it about fornication and adultery. We all had a giggle about that.
This is the same venue where the RC's are held, and a fair amount of "apostates" do their work there.
On a side note, we attended this event with new family we found through Ancestry.com. Old family consisted of me an exJW, one never baptized, and two offspring raised around it but never came in, and one JW. We are shunned for the most part by the JW, although this time, he was a bit more relaxed and on better behavior. I do my part of anti-witnessing calling out poor behavior to new family, the shunning etc.
From the outside looking in at this modern witnessing work, it just seems ridiculous. Talking to a guy that just left about a year ago, he told me he AUXPioneered (is that still the current term?) several months the year before last. He loved the easy hours and it was fun setting up the carts the college campus. He didn't see/feel the absurdity he sees now.