This is due to the small size of the island and its tranquility. Of course large economic nations are proud to exhibit their wealth and powers across the world- such countries are often the controversial highlight of the media. Barbados is quite the contrary but well known to those who have a good Geographic knowledge.
Mcdonald's is the proper noun. Normally the proper noun is a name of something or someone, so Mcdonald's would be the proper noun.
