1. We do not trust the HKSAR Gov which is absolutely useless!Considering that Hong Kong has ~6% of the population vaccinated so far, compared to Israel's 60%, I'd say - give it time; they'll figure something out.
I actually didn't go to Phuket at all; I went on the Smiling Seahorse out of Ranong rather than Khao Lak, and it was a photography charter in which we did two days at Richelieu Rock (seven dives + 1 blackwater dive off Surin), then one day at Surin (one dive at Koh Bon, two and Koh Tachai, and then a blackwater dive off Koh Tachai), and then three more dives at Richelieu Rock on the last day. Didn't touch Similans at all.
Koh Lanta was my primary choice of destination, but inquiries to local dive shops last November indicated that it was totally dead, while Koh Tao was quite lively, so that's where I went. It worked out quite well, all things considered - I rented a house with fiber optic internet so I was able to keep working normally and dive on weekends, and I joined a local group doing muck diving photography, which is not a well-publicized feature of Koh Tao.
2. The rate of infection(just over 11,000 and slightly over 200 fatalities) is quite low for a city of 8m.
3. There have been regular reports on the adverse effect after injection mostly associated with SINOVAC .
Hong Kong halts BioNTech shots; fears over vaccination drive ‘hiccup’ dismissed
This does not help either.
4. AZ is still being reviewed! And no reason was given for the delay!
5. Sinovac was approved.
Government responds to approval of vaccine by Sinovac for emergency use
China’s Covid Shot Has Four Wildly Different Efficacy Rates