They were a bit before my time too, but I doubt it will be full of idiot drunken west Enders. Went to the CO party in London in March & the vibe was awesome! Proper happy up for it clubbers of a slightly older generation. Most are late 30's early 40's and most are parents. Very friendly, very welcoming unpretentious crowd. Music was a bit too 90's house for me sometimes (too slow), however there were also many uplifting house tunes and big smiley happy faces. Most of the music in Ibiza now is too slow for me anyway, so I would go for the atmosphere & the all encompassing friendliness. In terms of the water party, I have never been, but from what others say, I believe it's only in one room & really close to the end of the evening.