Yes you can. You will have to book SHA+ transport straight from the airport to your SHA+ accommodation in Krabi and wait for the results of your pcr on arrival there. You can do the second pcr in Krabi
I’m from NL too, came in November, got the 30 day extension and then when I went back to immigration I got a 60 day covid extension when I told them my country is in lockdown. They wanted to see proof so I showed them this webpage:
/18/slowing-the-spread-of-the-omicron-variant-lockdown-in-the-netherlands and they gave me the visa on the spot. They also provided all the forms I had to fill in. (This was at Phang Nga immigration)
I had to prove my country was in lockdown to get the covid extension, I printed out a (English version) Dutch government webpage stating the Netherlands is in lockdown (nowhere did it say they closed the borders, I could go home if I wanted to), that was enough to get the extension (Phang Nga immigration)
Not Phangan, but Phang Nga ☺️ went to get a second 30 day, was denied, but when I said my country is in lockdown (and provided the requested proof by showing them a Dutch government website in English announcing the lockdown), they reluctantly gave me the 60 day Covid extension. Only downside is that it takes effect immediately, so I lost 10 days (my 30 day extension runs out