Thoughts: You will have a great time!
I have been on ground floor and the second floor. No preference to me. I liked the pool view better though.
I do have one tip though, if you will have your own car. I like riding in the boats as much as the next person. But if you want to get to the Studios quickly, this is what I suggest. Park your vehicle in the lot as close to the end of the far hallway as possible. There is a stairwell there that will give you quick and easy access to your car. When you exit the property at the security gate, turn right (?), and the studios is just accross the street. You can get there in like 5 minutes with little to no headaches. The boats just seem to take forevere with all the stops they make.