Didn't Christ go and eat with the tax collectors? If they had set up outside, then they would have been off the property and away from the people (the convention center wouldn't have let them set up right outside the door). By going inside, they were able to talk to people who otherwise might not have seen them.
Years ago a friend said to me that, "Jesus ate with the junkies, but he didn't shoot up with them."
Looks like this outfit crosses over that line.
I wonder if they're a front for "The Family" (formerly known as "Moses Berg's" outfit, "The Children of God", famous for such travesties as "flirty fishing" and so forth)?