I moved to Caribbean Coast a few months ago. It's a really great place to live. There are 2 phases to it - I am in phase 1 and so the construction there has pretty much finished, so there is no noise from that department. There is no aircraft noise at all - only the faint noise of the train as it goes past if you have a mountain view, but it's really nothing to get worried about. The train has never kept me awake.
I have never visited Phase 2, but I know construction is still in progress on the last couple of buildings in that phase and I have read that some people had some noise problems over there.
Caribbean Coast provides regular, free shuttle busses to and from Tung Chung MTR station for all residents, and they run both ways until about 1am, and start again in the mornings at around 6.
There is a great health club - it has and indoor and outdoor swimming pool, tennis courts, bowling facilities, indoor golf, gym, free internet, and a kids area (if you have them).
On top of all this, Tung Chung is a really great place to live. It is equipped with a few bars and restaurants, a really great shopping centre, and movie cinemas. It's only about 15 minutes by bus from Discovery Bay which is also a popular place to hang out, drink and eat.
Hope this info helps you.