Plan retail around the trip
Confirm boutique locations, hours and stock through official brand channels before travelling. Macau's compact shopping districts and hotel retail can make comparisons convenient, but the exact seller and written terms still matter more than the setting.
Check the item, not the presentation
For watches, bags and jewellery, record the exact reference, materials, condition and warranty terms. For pre-owned goods, ask for item-specific evidence, an explanation of the seller's grading system and a return route that remains usable after you leave.
Think about service at home
Ask whether the warranty and repair service can be used in your home market, how long a repair may take and whether proof of purchase is required. Keep the invoice and service paperwork separate from the item during transit.
Plan the border crossing
If you are carrying a purchase onwards, check current rules with the customs authority for both Macau and your destination. Ferry, air and land itineraries can have different practical handling requirements; verify baggage and insurance details with the carrier.