Will tourism in Thailand force consumption?

Of course not. Not if you join a group. Some friends went with the group before, which means it's not necessary. I also want you to buy something when you arrive, otherwise you will be left behind. Still have to pay attention to yourself.

Actually, it's just going with some friends. You don't have to join a group. Thailand can go to landing visa, which is very convenient, and there will be people from China. Don't worry. Simple English is understandable by Thai people, and it is quite friendly, and some people are not excluded. Food, drink and sleep are all cheap.