At the end of this month I have to go to Hong Kong for business.
I have a flight that will arrive Wednesday morning 10:30 at Hong Kong international airport and will leave 2 Fridays later at 12:50 AM.
I would like to spend the first two days in Macau, and then move to Hong Kong.

Are there good solution with ferries? How much it will be?
What's then the best way to go back to the airport?
And finally, do I need special visa? I'm Italian, and if I'm not wrong, I shouldn't need a visa if I stay less than 90 days.