Translation of authentisch

The connecting flight to Phuket was fully booked, and the connection to Krabi had five empty seats. The problem was that the boarding began in ten minutes and I did not even have a ticket.
I've also looked at the interface, and found it a good idea to include the colloquial option. Would it be very complicated to add the most important regional check box, like Spain, South America or Central America?
So you are getting used to write in Spanish. But I think you should not worry, as your Spanish is good and you understand everything. You'll enjoy it a lot, once you meet new people who speak it.