Should not advertise children's "activities" if not enough selection, room, time and variety. That was really poor. Possibly less talking/acting and more bright, loud, (or spooky) music which highlights the amazing orchestra.
Maybe spend the effort on a little sweet treat as the audience exits the hall or a few more tech adventures with lighting, smoke, sound. Design and print a mask face on a stick with the program printed on the back. A real "take home" memory. The little ones don't care much about an expensive program or the ads and donor lists.