I wasn’t asked for any proof of residence. I just filled in the address of the gym when asked for ‘address in Thailand’ (the gym does offer bungalows for rent), but they never asked for any confirmation or other proof.
Immigration can look up your TM.30 in their system, no need to show anything. The 90-day report can be done 1 week before or after the actual 90 day mark, so if
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is exactly 90 days since you came in and you’re leaving the 2nd, then no need to do it
No issue whatsoever. Pet documents are completely separate from (human) immigration documents (e.g. visas). For pets you deal with the Veterinary Authority and customs.
I’ve brought in my cat twice, both times on a TR60 visa. When I passed immigration, they didn’t even notice my cat and I didn’t mention her. After passing through immigration you go to the veterinary office (located in the baggage claim area) to do the ’immigration’ process for your pets.