I've never found a Maypole in the wild myself not even after using the word generator Ap and going to where it says they should appear? Dunno if unlucky or un observant...

Either way glad the event may be coming up again soon (assuming they definitely do a repeat of it). I wonder if that's hard coded in the game or they have to patch it in every time? be nice if the game really did get seasons as they have most of the other physics down very well.