I think not the way you mean. If you already have a Maxpass booked and it's not time for you yet to be able to select another, the app will stop you as you try to select one, so you won't be able to see the real-time available Maxpasses. You won't be able to check if there are Maxpasses available for a different time than what is available by pulling a regular fastpass. Your app will only show you the same fastpass availability as you can view at each ride. You would check what fastpasses are being distributed by clicking each ride in the in-app map/list.