Avast, thar! Come put grub in me gullet 'n drink wit' me at 'tis galley, or just come 'n visit buckos. Be tellin' stories 'o ye recent adventures. Th' event gunna start at 7:00 PM 'n last 'til we want to leave. 'n remember to speak like a scurvy pirate because 'tis International Speak Like A Scurvy Pirate Day. No prizes fer doin' so, but dressin' like a scurvy pirate be encouraged.
Or to put it in the King's English for those who can't speak pirate:
Hey! Come eat and drink with me at this restaurant, or just come and visit friends. Tell stories of your recent adventures. The event will start at 7:00 PM and last until we want to leave. And remember to talk like a pirate because it's International Talk Like A Pirate Day. No prizes for doing so, but dressing like a pirate is encouraged.
Translation courtesy of one of many free online translation websites.