How many buttons, where are they, and how thick is the plexi? They will hold it in place, certainly. The answer to whether or not someone will be able to pry up the edges will be answered by the first three questions. My CP has a very thin plexi overlay, maybe 1/32" or something and it's held down by a total of 8 buttons (two players, 4 buttons each.) My CP sits in between the sides of the cabinet with no overhang so it's flush to the inside of each side wall. You can however pull up the edges if you try to wedge something between the cp and the cabinet. Not that anyone ever tries that, including kids as young as 4 and as old as 50.