What should I do if my hotel cannot provide the TM30 required for my immigration visit in Bangkok?

I'm glad it worked out for you Robbie, and I'm glad you got the extension of stay. I can not see any reason to leave commenting open, so I'm closing comments.

Maybe u book one more night in this hotel.

Go to immigration and tell them u stay

In that hotel. The hotel must report your stay.

If you are applying in Bangkok, there is a good possibility of you are not asked for TM30 receipt depending on your current type of stay. And you are still in a close area to Immigration offices, maybe you can just try to apply it without TM30 and see what you would get.

If the hotel didn't do the TM30 for whatever reason, then there's nothing you can do 🙁

Here's what you can expect (Note: I'm assuming you're getting a 30 day extension of stay based on tourism or a 60 day extension of stay based on unable to travel due to COVID-19):

1. Bangkok immigration is hit-or-miss with the TM30 requirements. Sometimes it's asked for, sometimes it isn't. If they don't ask for it, don't tell them you don't have it.

2. You *COULD* be fined 800 THB. If you are, you will be sent to Muang Thong Thani, Counter B, to pay the fine.

3. The immigration office will simply verbally tell you to return with the printout from the TM30.

I recommend showing the hotel what a TM30 looks like; they may not be familiar with the term "TM30". I'm attaching printouts of accepted TM30s. The middle and bottom image are accepted from the computer system.