It is fabulous that kids (and adults too) are given permission to copy masterpieces sitting right there in front of it. Drawing boards and sketchpads are fine most anywhere. Paints and easels are permitted with prior permission. Watercolor in the courtyard only. But no solvents, pens, markers, charcoals and pastels, harsh chemicals or spray paints allowed which seems more than fair.
A fascinating place in the Museum of Art, Boston is the restoration room. I could stand there for hours. I find the minute careful detail work fascinating. There is a viewing window to watch the process without disturbing the craftsmen. I can only imagine how many audio books a restorer can go through in a short time.