I’m a gringo bitcoiner who visited Jericoacoara earlier this year. I found that several stores had a bitcoin sticker on their window or a « bitcoin accepted here » on their cash register, however none of them proactively asked how I wanted to pay in réais or sats, it was always in reais. In all honesty, the factor that stopped me from myself asking if I could pay in bitcoin was simply opsec. As a gringo in Brazil, i am already obvious enough to be targeted by thieves without disclosing loudly to the whole store that I hold bitcoin. Imo, an improvement would be for stores to automatically display a generic QR code of a sats invoice to pay without exposing myself.