He regretted spending too much time with the locals.
He regretted not going out alone more.
He regretted going to Spain in the first place.
He regretted not eating local food.
People yelled at him.
People begged for food from him.
People stared at him.
People thought he was just like them.
He thought they were so open and affectionate.
He thought they were so poor and tired.
He thought they were openly angry.
He thought they were just a little bit nice.