Had a quick look at the April KM - they are having (yet) another invitation campaign to the convention. Slight twist though , in that any invitations not used are to be taken to the convention & used in informal witnessing.
Traditional "convention reminders" insert - usual stuff about "Jehovah arranging the program" , get early to the stadium , tip restaurant staff , don't make a scene at hotel reception desks if they have messed up your booking , no peeing in the hotel pool etc. (I made the last one up , but you get the gist.)