Reading over their Privacy Statement can create a few loopholes in their favour (the bit about relevant announcements), but when you join an organisation or mailing list, it should be mailouts that are relevant to the reason for joining (in this case, Transformers or the Club itself), not relevant to the owner (a theatre near him).

But it looks like he's done this before, in 2006 with a "chain letter" email supporting American troops. Either I didn't notice it, forgot about it, or it was only sent out to American members. If the latter, this theatre email should also have only been sent out to people in the nearby area of the theatre... not everyone in the world.