Regardless of whether you preferred Julie Andrews as Maria Von Trapp or the queen in Shrek the Third, you’ll walk away swearing that she takes the cake in Mary Poppins after a visit to the Wilmette Theatre. This north shore venue is hosting a Mary Poppins Sing-a-Long today and on August 31. Attendees of all ages can belt out the lyrics of “Let’s Fly a Kite” and “A Spoonful of Sugar” along with the timeless film and the accompaniment of a live cast. Advanced reservations are highly recommended, and tickets cost $12 per person. True, you could always save some dough and do karaoke in front of your family room flat screen, but will your kids ever forgive you for subjecting them to that?