Mister = Senhor
Good-Bye = Adeus or Tchau

So, when will you came to this parts, mate?
Oh, and by the way, unlike in UK, the pubs here close very late, normally 3 or 4 in the morning, and nightclubs can close at 7 am. If you are after the nightlife, you cannot get too wrong here. So, don't do the typical stuff that it's done in so many anglo-saxon countrie,s which is, get drunk fast in fear the joint will close. Relax and take your time.