I agree with BounceyOne, but I will say I have been very lucky on several trips. I have arrived at 7am, 10am and 2pm and a room was available and I can tell you after being on a plane all night, it was nice to have the room available. Now it hasn't happened every trip but it sure was nice when it does happen.
The thing is "IF" and I want to stress "IF" the room is available with the view you requested, they will be more then happy to give you the room but if it's not, they'll check you in but will not assign you a room, that way your luggage gets stored and your off. They'll tell you to call back or check back to see if the room is ready or available.
If you are a concierge guest, what has happened for us in the past was they gave a keycard so we could have access to the floor or building saving us the time of dealing with the front desk. We always stop in the lounge to grab a cup of coffee and some juice. The front desk can have long lines if the resort is busy.
Good Luck!