I've spent a lot of time in Hong Kong over the years, but never visited some smaller islands.
So I took an organized tour. In this case there were only three people on this tour myself, my partner, and another Australian woman, plus our tour guide. Well organized, punctual, and interesting history given of the island by our very friendly and pleasant tour guide.
It was absolutely no fault of the tour guide, but it was very humid always at this time of year, so the tour could not be enjoyed to its fullest, simply because it's a walking tour of the island. I would recommend that it would be better to take this tour in the cooler months of maybe October November, or February March, unless you enjoy walking in high humidity.
The included Dim Sum lunch was pleasant but don't expect 5-Star at a regular and fortunately air conditioned local restaurant. It seemed a pity and somewhat sad that our tour guide was not able, maybe not allowed ,to join the three of us for lunch. We almost felt somewhat embarrassed that he apparently although he did not indicate so, it's my assumption he was not supposed to eat with his guests. Seemed a bit strange to the three of us, and would have been a more pleasant lunch had he been able to join us.
Never-the-less, it was a worthwhile and interesting 6 hour trip, we could have stayed longer on the island had we wished, but we all just wanted to get back into the air conditioned ferry back to Hong Kong, to a car-less island, where bicycles seem to be the main means of transport.