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

"It is important to be mindful of local customs and etiquette when visiting Riga. 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 sites and to avoid taking photographs without permission. It is also important to be aware of the local language and to avoid speaking loudly in public. Finally, it is important to be aware of local customs and to avoid making assumptions about the culture," remarked another expat who made the move to Riga, Latvia.