In Wales, you can say "hwyl fawr" to say goodbye in Welsh.
we say gwanwyn in Wales.
gekommen, um wales.
You say helo.
Wales, as the word originates from the Germanic language
I will say Whales are cool, but wales are not very fun to have.
Baleine
Viva en Gales - you live in Wales Vivo en Gales - I live in Wales
Harry Windsor, Prince of Wales. Some may say Harry of Wales.
Je suis Gallois is 'I am Welsh'. You can also say 'Je viens du Pays de Galles' (I come from Wales).
Because he is the son of the HRH the Prince of Wales he uses the name Prince William of Wales.
Wales is a country. It has it's own language and its own elections for welsh ministers. So yes, I would say Wales is significant!