Just because you move to Thailand, does not make you a Thai person.
In fact, you can live any life you want to.
Many people that move to Thailand, think they have to live and act like Thai people.
The real answer is no, you do not have to.
Were you a Buddhist before you moved to Thailand?
No? There is not reason you have to change to be a Buddhist now.
The Thai Constitution guarantees religious freedom for all citizens.
Eating Thai food every single meal?
No? Thailand has a wide range of international foods and you can eat whatever you like.
Even as a Thai, I appreciate western foods now and then.
Do I have to practice Thai customs like “Wai”?
No, that is for Thai people.
Do I have to speak Thai language?
There is NO requirement to speak Thai, however, learning day to day will help will make your life here much easier.
Do I have to celebrate Thai holidays?
Only if you want to!
Moving to Thailand did not change you into a Thai person.
Be free to live and practice your own life here.
It is always best to understand and be respectful of the hosts, the laws in Thailand and whether you practice their customs or not, is up to you.