Both are tourist cities with many businesses that are adopting bitcoin. Rolante has been doing this for a longer time and Santo Antonio is newer to the adoption, as far as I know. 
Here are the project websites:

https://www.bitcoineaqui.com.br/
https://nostr.com/npub18fh6flnjt9aa3jlnp5k3kd9zr6v5mlpeczhdx4qheytfyyqfpe7s2y0lzm

I don't know if there are members of the communities here in SN.

Thanks for the ground level information. Do you know much about those two public circular economies? Could they be running an instance?

siggy47

bitcoin

Daily Robosats Update 4/25/25

As a Brazilian, I say that the community is more made up of people who want to protect their money from the state. We still don't have one, or I don't see one in my circle, even though I've already presented it. For now, we have some experiences of circular economy that are public, one in Rolante/RS and another in Santo Antônio do Pinhal/SP.