Nmm, at least some of the things u can see and buy like Teapot Sets, Wall and Cupboard Stickers, Ang Bao, Side Table Wedding Lamps, Guest Gifts, etc...
Based on my trip eencounter, is better to go to Golden Plaza or area to buy wedding stuffs on the 1st or 2nd day cos some stuffs (teapots, Guest Gifts, etc) might need to wait for a few days upon your purchase...