Have not herd anything on the news here about a drowning. But on the question of DC, we where ther 8th July, and my DW had a bit of trouble at DC in the lazy river, she was unable to get back at a waterfall to get out ,and was starting to panic, there was a life guard sat there watching her, and a guy standing beside her, who was waiting on one of his family coming round, jumped in and helped my DW get out. I had read reports of this happening on other occassions, so i would be very wary of anyone in your party who is a bit wary or panics if they get into a bit of difficulty.
We reported it and they said the lifeguard did not think she was in any trouble in the water, fortunatley the guy who helped her out was sat a few loungers away from us, and my DW said they should go talk to him, which they did.