I'm somewhat surprised no one has commented on the absurdity of the English group inviting us to a religious convention so far away.
That's probably because none of us is very surprised that dubs follow orders, not matter what. When told to distribute these invitations, the few JWs who would wonder how this makes any sense would simply shrug and do it anyway, or find an excuse not to. Everyone else would just "follow the organization," the way we all used to.
But you make an excellent point; it certainly illustrates how little the "field ministry" has to do with reaching people in a meaningful way.