We've done both at Riviera. The standard view is a gamble -- you can have mostly parking lot view or you can have a pretty incredible view of Spaceship Earth. The first time we stayed, we lucked out and we could see Spaceship Earth and hear the water from the fountains - we spent a lot of time on the balcony and wondered why we'd ever pay for preferred. The second time we were in a room that just overlooked parking. It wasn't miserable, but I didn't spend much time out there since there wasn't a lot to see. Most recently, we did a 1BR preferred view in January because it was only $50/night more and we were curious if it was worth it. It was really beautiful -- we were up on a high floor and could see the Skyliner, pools and everything. We spent a lot of time on the balcony. That being said, I would not pay 25% more for it... I'd gamble with the Standard view.