The Wild Pig Hotel has a great bar area (and a restaurant next door) that you can take advantage of without being a guest at the hotel.
The Tusker (beer brewed in Vanuatu) is cold and relatively cheap (300 VT, about US$2.75 for a pint). They have a pool table, which definitely makes for good entertainment and quick comraderie, regardless of if you're playing or watching! There's also a large screen tv, which I have to say was really entertaining after spending 5 weeks on one of the outer islands that didn't have electricity! :)
Dress Code: No dress code. Just go dressed! :)
We didn't see the Mamu Bar open at night but when the cruise ship came in it was open in the middle of the day and was going OFF! The cruise ship people came in and took over the whole place...hehe...
We saw some gorgeous sunsets while we were in Vanuatu and this is just one of them that I took a photo of. We were standing on the path just beside the ocean...very pretty...