I go to one but I am always with my husband. But if on my own I would be sat at a table where I could see both the big and small equipment. I would not be able to go on any of the equipment as I am terrified of heights so it would be a case of they would only be able to go on what they could do themselves but in the case of the 2 and a half year old he would be at the top of the highest piece of equipment so I would make sure that if he got up and couldn't get down would the staff there be able to fetch him for me. I know of one childminder locally who sits and ignores the children the whole time they are there. even with hubby with me and only one child I would be watching constantly