From the WWE Appearances in Canada webpage:
Friday, July 22 4:00 p.m.
Niagara Falls, ONWWE Announcer Mean Gene Okerlund and WWE Legends Bobby Heenan and Roddy Piper will be making a special appearance at WWE Niagara on July 22 at 4pm. You don’t want to miss this opportunity to meet these great Legends! WWE Niagara is located at 4921 Clifton Hills, Niagara Falls, ON.
Also, from a recent press release:
In addition to the live event dates in Ontario and Quebec this summer, WWE will be hosting the Legends Weekend at the WWE Store in Niagara Falls, Ontario. On July 22, three of WWE’s Legend Superstars, “Rowdy†Roddy Piper, “Mean†Gene Okerlund and Bobby “The Brain†Heenan will be signing autographs for fans at 4:00 pm. On Saturday July 23, several of WWE’s top SmackDown! Superstars will also be signing autographs. (Time and talent to be announced.)