Hi Do you have to stay in the hotel that you put down on the single entry visa application and arrival card? and if you change your mind and go to a condominium instead when you get to Thailand then go to immigration to report the TM30 report on the same day of arrival will there be any questions at immigration?

You do not need do anything. Your on a setv. Just enjoy your stay. At some point if you need attend immigration for example to extend your visa 30 days, then best make sure your tm30 was done.

Edited July 13, 20196 yr by DrJack54

You are free to change your mind after leaving the airport, nobody cares if you stay somewhere else.

If you stay at somebody's condo the owner / housemaster of this condo has to report your stay at his condo to immigration within 24 hours by submitting a TM30.

In case you rent a condo in your name, then you could be deemed the "posessor", and in this case you also have the obligation to submit a TM30 (only one TM30 required, if the landlord reports you, you don't have to do another TM30. But in case the landlord does not report you, you should report yourself)

45 minutes ago, jackdd said:

You are free to change your mind after leaving the airport, nobody cares if you stay somewhere else.

If you stay at somebody's condo the owner / housemaster of this condo has to report your stay at his condo to immigration within 24 hours by submitting a TM30.

In case you rent a condo in your name, then you could be deemed the "posessor", and in this case you also have the obligation to submit a TM30 (only one TM30 required, if the landlord reports you, you don't have to do another TM30. But in case the landlord does not report you, you should report yourself)

Your over thinking this. The OP comes across as TOURIST. He needs to do nothing unless he is attending imm. Perhaps for a 30 day extension to setv.