Hello, We are cruising for the first time with our 3 and 5 year old boys. On the April 29th Eastern sailing. This might sound a bit crazy, but I am wondering how safe it is for children on the boat? I know it's disney and safety would be #1, but I have visions of my 3 year old son climbing over the boat rail and falling into the water. I know when he is with me I will watch him constantly. But if he is in the kids club and they are going to different places on the boat, how do I know he won't sneak away from the group and climb overboard? Can anyone reassure me? Also, what other safety features do they have on the boat? Eg. Are there childsafe locks on the verandah doors? Thank you!