Usually you have to register on ATGENES, when arrived at airport before taking pcr test, they will give one brochure with barcode on it. After register all result both for 1st and 2nd test will be sent to your email registered when you filling the form.
for transport you should contact the hotel using email, i stayed at Patong Bay Hill and they are very quick to respond our email, you can find it on agoda
The ask:thailand community, consisting of multiple Q/A groups with over 100,000 members, powers this platform. It is not an official government resource. Our members actively contribute to this resource, and while we strive for accuracy, we cannot guarantee its complete reliability. Assistance to travelers is provided as a community service.