I've stayed in OV on deck 2 on Adventure. I liked it just fine. It is quiet as no one not staying on the deck has reason to be there. There is no problem getting an elevator as they are empty when they get down there. And at ports of call Adventure uses deck one for gangways so all you have to do is walk down one flight of stairs to get off and coming back you can bypass the crowd waiting for elevators and just walk up one flight of stairs and you are home.