In Thailand, there is a certain time of the year that a group of people would be eating vegetarian food. That's why there are not so many people who are really vegetarian. So there aren't that many shops around selling vegetarian food.

I only eat vegetarian food.
(phom gin jay)

I only eat vegetables.
(phom gin dtae puk)

I don't eat meat or dairy products.
(phom mai gin nuea-sut reu ar-haan tee tum jaak nom)

I don't want any meat at all.
(phom mai aow nuea-sut loei)

I didn't order it with meat.
(phom mai dai sung hai sai nuea-sut)

Do you have any vegetarian food here?
(tee-nee mee ar-haan jay mai)

Where do they sell vegetarian food?
(tee-nai mee ar-han jay khai)

Does this dish have meat?
(jaan nee mee nuea-sut mai)

Can I get this without meat.
(aow baep nee dtae mai sai nuea-sut dai mai)