What I mean to say is... WDW is very careful not to have a character in two places at once. Since there is only one Mickey and only one Mary Poppins, and they cannot be in two places at once... if Mary is at GF then she is not at CRT, and versa vice. Just like when Mickey is at the front of the Spectromagic Parade, he can't be signing autographs at toon town.