The ferry from honeymoon island leaves every hour on the hour starting at 10 a.m. it was around $50 for 2 adults and 2 kids.
It's about a 15 minute boat ride, and the crew gives some history on the ride which was really nice. Your ticket has a specific return time 4 hours from when you arrive. They said you can leave earlier, but only if there is space available. They seemed full when we went on a weekday, so anticipate staying the full 4 hours.
There is a little grill/gift shop as you pull in to the marina. They sell food, ice cream, beer(but any beer must be consumed at the grill area). There are bathrooms there but only 2, so keep going another 100 yards toward beach, where there are 2 more bathroom facilities with many stalls in each. Just a few more steps down the boardwalk to the beach and it is beautiful. Tons of shells, you are able to take a many as you would like as long as there are no live critters in them. There is a nature path on the interior of the island, but be warned it is buggy. Bring bug spray or buy some at the gift shop if you plan on hiking. There were not any mosquitoes in the beach or by the marina, not sure if that is normally the case.
It was a relaxing way to spend a few hours, we packed lunches, but you could bring a beach chair, etc if you wanted. They also had rental items at the gift shop such as chairs.
It felt tropical, quiet and remote while really only being a boat hop away from everything.