Take your shoes off when entering someone's home and respect the nature
At first, Icelandic people may seem shy or reserved, but become quite friendly once they get to know someone. They are not typically emotive in conversation, preferring a more neutral expression. Icelanders are known to favor a direct and straight-forward communication style.
Iceland is a Nordic country, which means it has strong ties to the ancient Vikings. Icelanders are proud of this heritage and the many customs that come along with it, particularly in terms of the language which still has close ties to the Old Norse language that would have been spoken by early Viking settlers.
Icelanders are known for their reserved demeanour and value for personal space. While this should not be mistaken for coldness, it's important to be mindful of this cultural trait, particularly when interacting with strangers.