One more Island

Hi all

I want to go to Vanuatu in mid October and am in my late 40ts, female and on my own. Want to do Port Villa and around, Tanna and Santo. Am looking at going for around 3-4 weeks. Would love to do another Island but not sure if it would be wise caus am on my own, looling at 5-7 days on each. Have looked at the positveearth website so want to cut money down on accommodation so I can spend on trips and diving. Have travelled on own in Asia and I know about the dress code.

Thanks heaps for any ideas

jen