I visited this amazing island (or really group of islands connected by a white sand bar) back in August 2015 while traveling through Thailand. I was staying on Koh Tao, a larger island near by, so I took the 15 minute boat ride over to do a bit of snorkeling, a bit of drinking and a bit of R&R. Upon arriving, I had to dump my water bottle, as they request no plastic be brought to the islands, which is obviously a good policy. Instead, they bring glass bottles in and out by boat everyday.
You can actually stay on Koh Nang Yuan, which I didn’t know before my trip, otherwise I would have considered it. However, it is a bit expensive, especially in the high season, and the rooms tend to book up well in advance. There is also a large bar and restaurant around the dock area, which serves up cold beer, along with various food items. I forget what I ate, but I’m sure it was something spicy.
Most visitors hike up to the view point, where the iconic image of the island(s) is taken. I obviously did it too. It’s not too strenuous, but I guess that depends on your physical condition and choice of footwear. You can also hike around various parts of the islands, snorkel, dive and swim (the water is pretty calm), or lay out on one of the beach chairs (although they charge a few baht to rent them).
I passed on laying out, but I did snorkel which was nice. Lots of fish and coral, and again, the water was super calm, so it was very enjoyable. And if diving is your thing and/ or you are looking to get certified, Koh Tao is a good spot. There are several dive shops that can help you out with whatever you need.
If you have any questions or comments about Koh Tao or Koh Nag Yuan, feel free to post something below and I’ll reply with what info I have.