Do they make keys there? And what do u need to get a replacement key for a 97 Avalon ?

Yes they do make keys. You will need the VIN number or if you have them, the original key tags that came with the car when it was delivered to the original owner. The VIN number is the easiest though.

Yes

Yes, they do make the keys. I am not sure about the requirments though.

Yes. The VIN number.