Vanuatu in November

Hi,
Im off to Vanuatu in Novmeber for 10 days. Am after diving, snorkelling, some chilled out beach time, good food and a bit of nightlife. Any ideas of where best to get a good blend of the above?? not limited to one particular island!
!

Best diving is the President Coolidge, at Luganville on the island of Santo. Google for info. There's also some nice reef diving around there.