Mandatory reading before Batman: Whatever Happened to the Caped Crusader?

Will I have to read Batman RIP or anything else before reading Batman: Whatever Happened to the Caped Crusader? I'm an above average Batfan that has heard of, but not read, every comic arc, seen all the live-action films and BTAS, and played all the non-VR Arkham games, so maybe I already have some of the needed knowledge going in.