My family and I are looking to stay at Las Casitas. I understand that El Conquistador is next door and has a water park. However, in the pictures for Las Casitas it also shows a pool with a few water slides. Are those at El Conq. or at Las Casitas? If they are at El Conq. is there a daily surcharge to use the water slides and how far walking distance are they from Las Casitas? I am trying to get a handle on all the extra charges for this resort. My sons love water slides and I know that they will want to use them. I was hoping Las Casitas had a few on site and that we wouldn't have to walk over to El Conq.