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

"When visiting Grindavik, it's important to respect the local customs and traditions to avoid any cultural faux pas. Here are some things to keep in mind: Avoid being loud or disruptive, as Icelanders value peace and quiet. They are generally reserved and appreciate the same from visitors. Do not litter or damage the environment. Icelanders are very proud of their natural landscapes and work hard to preserve them. Always follow the marked paths when hiking and never leave trash behind. Avoid discussing whaling. It's a controversial topic in Iceland and can lead to heated debates. Do not expect service staff to be overly friendly or engaging. In Iceland, good service is often equated with efficiency and not necessarily with friendliness. Avoid comparing Iceland to other countries, especially in a negative way. Icelanders are proud of their unique culture and heritage. Do not expect everything to run on time. Iceland operates on what is affectionately known as "Icelandic time," which can be more relaxed than what visitors might be used to. Avoid entering someone's home with your shoes on. It's customary to remove your shoes when entering a home in Iceland. Do not rely solely on credit cards. While most places in Iceland accept credit cards, it's always a good idea to have some cash on hand, especially in smaller towns like Grindavik. Avoid taking photos of people without their permission. This is considered rude and intrusive. Lastly, do not ignore safety warnings, especially when it comes to the weather and outdoor activities. Iceland's weather can change rapidly, and it's important to be prepared and heed local advice," remarked another expat who made the move to Grindavik, Iceland.