Things to do: Snorkel, surf, eat, golf, and visit historical locations.
Accommodations: Grand Hyatt in Poipu Beach area
Passport requirements: None required for Hawaii
Health issues: no known health issues with travel to Hawaii
Restrictions on visiting reef: You are not allowed to take anything away from the reefs. Anything taken carries a fine of up to $5000. Also you are not allowed to fish on the reefs. All of the fish are protected. Lastly you are not allowed to touch sea turtles, this can be followed by a $10,000 fine and jail time.