I think this reference/observation may only be in regards to the YC pool where there are far fewer passengers. We just disembarked the Seascape this morning (sailed in YC) and were allowed to have drinks at the edge of the pool. However, when we said the Seaside in a standard balcony back in July, we were NOT allowed to bring any drinks, plastic tumbler or otherwise, anywhere near the main pools on decks 8 and 18. While we've always been able to do so on other lines, I kind of appreciate this level of enforcement- it helps prevent drunken spillage of daquaris and keeps people from camping out all day.