There's an article from astralmedia.com discussing Camp Rock in Canada.  Canada will also have the "We Rock" music video premiere on April 21st while we have ours on the 19th.  The reason i'm bringing this up is because the article also mentions that:

"Three other music videos of the film’s songs will also have their exclusive Canadian premiere on Family – Play My Music on May 10, Start The Party on May 25 and This Is Me/Gotta Go on June 7."

Keep your eyes and ears open for more dates for Camp Rock video premieres!