Our group has been on Sunday and Saturday nights, and the Sunday crowd seemed larger (and a bit rowdier) than the Saturday night crowd.

We've been hitting up NI/Willy T on the last night of our charter (Saturday) for the past few years, as it's a calm anchorage and close to Road Town for boat return. However, as mentioned above, the Sunday crowd seemed way more rowdy...perhaps because it is a good 'first day/night' anchorage - also mentioned above...

The bartenders seem to sense what's going on with the crowd (probably by how many drinks are being poured) and will shut the party down when appropriate...the last two years has been earlier than I would have liked, but you can always continue the party on your own boat - or smarter, go to bed.