The hotel I stayed in (very) recently was definitely paying lip-service to the Test & Go process.
I had a private (advertised as shared, but there was no-one else) transfer from BKK first to the Covid outdoor testing centre, and then on to the hotel in Silom (I won't name and shame). Waited for an age in reception while they found me a room, and this was at a "normal" check-in time (15:00).
The following morning, no-one called to inform me of the test result. I went to reception and after a search through a sheaf of papers, I was handed my negative test result. I went to have breakfast at Took Lae Dee. Later, when I checked out, I handed in my room key and after a few clicks on the computer, I was told I was good to go.
"Shouldn't I get an ATK [Covid lateral flow test kit]?" I asked. The girl looked flummoxed, but disappeared into the office, and came out with a box. "And who should I report the result to?" I asked. "No-one - just take it". And that was that!