They weren't carding or anything at the top.
You may want to be aware that it two flights of stairs to the top of the Mickey slide. My four year old went up the first day, walked back down, and it took until our last day to convince her to give it a try. It was too high. Once she went, she loved it.
I walked her up the first time she successfully went down - not many parents making that walk either (although they will let you walk your little ones up).