We are trying to decide if we should go to Magic Kingdom on 04/05/18 when we are in Orlando. We are staying at the Dolphin but had originally planned on just going to a water park that day. Question- is there any way to see if there are fast passes even left on some of the more popular rides that day at Magic Kingdom if we don't have tickets yet? For example, Snow White, Splash Mountain, Big Thunder? I hate to buy tickets only to find that there are no fast passes left. I don't mind if they are late in the day.