RC - Oasis of the Seas (Jan 2012)
It was weird to us as well, as we'd read online that water was OK to bring aboard.
Few things to keep in mind.
-They didn't confiscate the water and had no issues with it...I think they just assumed there was booze hidden in there somewhere.
-This wasn't the only bag with water in it, as we threw a few bottles in each bag....none of which were harassed. This bag contained the bulk of it though, which is why I assumed it to be the cause.
I realize this scenario might be an anomaly, but I figured it is an experience worth sharing, for anyone considering it..... it could happen