SSL488

My girlfriend and I are looking to plan a trip to KI summer 2013. I was looking at some of the "featured hotels" on the KI website and I see that you need to be 21 in order to check in at most places. Both of us a currently 18 and we will both be 19 at the time of our trip. We're not minors, so why would we need to be 21? The hotel I would prefer to stay at is the a Super 8 since it's right across the street from the park. Is there anyway around this "You have to be 21 in order to check in?" Maybe if I had my parents book the hotel room and call the hotel and explain the situation to them?