What cultural faux pas should I try to avoid making in Marinha Grande?

"It is important to be mindful of local customs and etiquette when visiting Marinha Grande, Portugal. It is considered rude to be late for appointments or social engagements, so it is important to arrive on time. It is also important to dress modestly and conservatively, as revealing clothing is considered inappropriate. Additionally, it is important to be respectful of religious beliefs and practices, as well as local traditions and customs. It is also important to be aware of the local language and to avoid speaking loudly or using offensive language. Finally, it is important to be aware of the local laws and regulations, and to avoid engaging in any activities that are illegal or prohibited," remarked another expat in Marinha Grande , Portugal.