EXCLUSIVE: ‘Mary Poppins’ to close, ‘Aladdin’ to open

My spies at No. 17 Cherry Tree Lane tell me that Disney’s long-running hit “Mary Poppins” will close April 3rd at the New Amsterdam Theater. The musical, which Disney co-produced with Cameron Mackintosh, overcame mixed reviews to chalk up a run of six years. My spies in Bagdhad tell…