" Specifically, it is alleged that (1) construction is going on 24-hours a day, causing an obscene amount of noise, and (2) there is so much dust and dirt being kicked up from the construction that it's impossible to lay outside by the pool and enjoy yourself without choking to death."

I know the first one is true, and as for the second it would only make sense. Even though construction sites must water down there sites so they do not kick up the dust, it still happens. I would avoid it, but check out the construction site its HUGE!! And at the Bellagio there is a model of what it will look like when its done.