I live in Maui and we are getting married in November at the olowalu plantation house. We are expecting about 50 people, I am planning everything myself (not using a coordinator, except for the day of the wedding) and we are spending between $12,000 - $15,000. I also have been getting a local discount for some things. I know my situation doesn't help you much but it can give you an idea. If you are planning on using a coordinator and such my guess would be that you are closer to the $20K-$25K mark.