I did SR , just five nights, in the middle of an 8 week sabbatical.The rest was all diving.You will see loads in five days. It’s hard to get an English speaking guide so books one straight away when you get there. They all have at least one degree in Cambodian history and are absolutely superb. Tones San was beautiful and can be combined with temples easily.
We are just back from Ko Lanta, the coral seems much improved compared with 2014 and there are plenty of fish. We kept missing a whaleshark, but the mantas had not appeared yet this year. But we saw some very nice macro ,lovely soft coral sites and of course that beautiful food.
Already have a recommended tuktuk driver (yes, I’m obsessed with pre planning)
Great to hear about the corals in Koh Lanta! Who did you dive with? What dive sites do you recommend? For sure Hin Daeng/Hin Muang, but it’s such a long trip.