Many Hong Kong visitors don't realize a full-day trip to Macau is easily doable, or that Macau itself is a separate special administrative region (not administratively part of Hong Kong or mainland China), with a Portuguese colonial character entirely different from Hong Kong's British one.
The ferry: how and when
Ferries depart from two main terminals: the Hong Kong-Macau Ferry Terminal in Central on Hong Kong Island, which runs nearly 24 hours with frequent departures; and the China Ferry Terminal in Tsim Sha Tsui, Kowloon, which operates limited hours, roughly 7am to 10:30pm. The crossing takes about an hour — book your ticket online in advance, especially on weekends, to avoid sold-out sailings.
Entry rules for Macau
Since Macau is a separate special administrative region, crossing from Hong Kong is treated as a separate border entry with its own passport stamp, just like between Hong Kong and mainland China. Check Macau's specific entry rules for Saudi passport holders before traveling; while often similar to Hong Kong's policies since both are special administrative regions, the systems remain administratively separate and details can differ.
Top sights in a single day
The Ruins of St. Paul's is Macau's most iconic symbol: a massive stone façade from a Jesuit church built between 1602-1640 that later burned, leaving only the front wall standing, now a UNESCO World Heritage site. Beside it sits Monte Fort, overlooking the old city. From there head to Senado Square, with its wave-patterned traditional Portuguese-style paving, then walk through the narrow surrounding alleys lined with Portuguese restaurants and bakeries.
Eating in Macau
Macanese cuisine is a unique Portuguese-Chinese fusion worth trying for at least one meal, but check halal options in advance, as they're less widespread there compared to Hong Kong — you may need to settle for seafood or vegetarian dishes if you don't find a clearly certified option.
Final tip
Allow enough time for the return trip, as the last ferry from Macau to Hong Kong has a set time, and the queue can get long in the evening, especially on weekends; arriving at the terminal an hour before your sailing is usually sufficient.