Does the check-in time of Thailand # Bangkok Hotel have to be after two o'clock?

Yes, I have been to Thailand and Cambodia in April, and all hotels check in after two o'clock. I arrived at the hotel at twelve o'clock in Bangkok, but the front desk told me that I could put my luggage at the front desk to check in, but I couldn't get my room card until two o'clock.

The check-out time is twelve o'clock. This is different from hotels in China.

I hope my answer is useful to you.