What cultural faux pas should I try to avoid making in Manuel Antonio?

"When visiting Manuel Antonio, avoid wearing revealing clothing or beachwear outside of the beach areas, as it may be considered disrespectful. Refrain from making loud noises or playing loud music in public spaces, as Costa Ricans value peace and quiet. Be mindful of the environment by not littering and respecting the wildlife, especially in the national park. Avoid discussing sensitive topics such as politics or religion with locals, as it may lead to uncomfortable conversations. Do not assume everyone speaks English, and make an effort to learn some basic Spanish phrases to show respect for the local language. Be punctual for appointments and social gatherings, as Costa Ricans appreciate punctuality. Finally, avoid being overly aggressive when bargaining at markets, as haggling is not a common practice in Costa Rica," remarked another expat in Manuel Antonio, Costa Rica.