What cultural faux pas should I try to avoid making in Ponta Delgada?

"When visiting Ponta Delgada, avoid speaking loudly in public places, as the Portuguese tend to be more reserved and appreciate quiet conversations. Refrain from discussing politics or religion, as these topics can be sensitive. Do not assume everyone speaks English, and make an effort to learn a few basic Portuguese phrases. Be punctual for social engagements, as punctuality is valued in Portugal. Avoid wearing revealing clothing, especially in religious sites, as modesty is appreciated. Do not refuse food or drink when offered, as it may be considered impolite. Finally, avoid comparing Portugal to Spain, as the Portuguese are proud of their unique culture and history," said another expat in Ponta Delgada, Portugal.