This summer I will be heading to Sicily for a vacation that will last 2-3 weeks. Now, I can communicate well enough in Italian but I know that there are differences between it and Sicillian. The only person in my family who spoke with a Sicilian dialect was my great grandfather and he's been dead for a long time.

So, could anyone tell me what any major differences are between the two said dialects. Any advice on this subject would be greatly appreciated.