My guess is it will be a waterproof band. Maybe display the time, maybe not. Maybe beep 5 minutes before your scheduled ride, maybe not. You will be able to enter the virtual queues via kiosks around the park or your smart phone. I believe you will be able to schedule several all at once making the trip back to your locker or kiosk it worth it. I think there will be a time window, probably 30 minutes, but I can see as short as 15 minutes. If I had to guess I would say that 2 hours after park opening if a queue has consistently been below 10 minutes they may turn virtual queuing off for that ride. So basically you can just get in line. If waits become bad again they turn on queuing. But honestly this is pretty complex, so not sure they will do that. My guess is the scanning machines would be at the beginning of the line so that prevents people from walking all the way up to realize they had the wrong time. They can easily do this for a water park. Keep in mind some things won't be on virtual queuing. Wave Pool, Lazy rivers (2), and kiddie areas. So there will be enough space (especially with 2 lazy rivers) that virtual queuing would work. Think on a normal water park day how many people are in line and how much open space is available in all those other areas. Plus this park will have an extra lazy river. I also think they may have better food options than a traditional water park.