Shoot? Pubs, cafes, Japanese Restaurants. Even used flash and their decorations, etc. I usually ask "ok if I shoot my girlfriend?" heck, a bartender even joked I've to get a drink from him for $100bucks.
No U turn syndrome in S'pore.
Typically, you ask, they will say no.
You just do a few snap shots with your family members in the pict, usually ok.
S'porean shops are all very paranoid over ppl copying their shop layout/price/design/etc.
I've encountered an interesting one the other day. This bloke had his bird (in cage) hanging across the road from the coffeeshop he was at. A fellow photographer went over to take some shots, but he was stopped. Cannot shoot his 'bird' (maybe a privacy issue)