I have lots of ideas but I need to know what island your staying on or will what island be decided by what there is to do? each island has its own flavor I'd start off by taking a virtual tour of all the
Hawaiian Islands. Talk it over with the girls and find out what they would like and then let me know. I've been to Hawaii 10 or so times and I used to work on a cruise ship that made its route the islands so I'll set you straight.