All of COD's light switches are functional. A few numbnuts turn something on or off on occasion, but we reset them. I play with the lighting far more than any vistor. My chief goes nuts when he thinks a visitor is turning knobs. Instead, I tell him I'm redesgning the lighting.
The panels have fuses that the navy inspectors want us to keep locked. Instead of drilling holes for padlocks, we put a line of RTV sealant along the door seam. Locks it good and tight against pulling forces. When we need to replace a fuse, a knife run under the door edge opens it up like new.
The issue is how the visitor treats the boat. Kids will play with something that they think of as "dead." If they think of it as "live" and maybe dangerous, then maybe they'll behave...

But by removing the switches, the panel looks even more "dead" and the boat even more "visitor proofed" so the whole situation becomes a circular argument. Not sure what the answer is for you...