Talk to me about the Verandah child proof locks-my son will have just turned 4 at the time of our cruise. Our last cruise he wasn't quite two and could manage all the locks on the state room door (he is an anomaly-don't let me freak anyone out, and the door was WAY to heavy for him to actually pull on). We could never have our home child proofed with normal child proofing because he would quickly undo them. So my question is-are they something a mechanically minded child could figure out? Thanks all!