What the two children did is not allowed in Singapore, in terms of being underage and driving a vehicle (or van in this case) on their own. 18 years of age is the legal driving age in the country.
What Mary (played by Patricia Mok) and Robert (played by Nelson Chia) are doing are actually picking lottery numbers, and discussing the kind to buy.
Where the female 'ghost' had asked Lin Bang (played by Huang Wenyong) drive to, it is an actual crematorium.
As San Wan (played by Jimmy Nah) is a parking attendant, the customers at the coffeeshop panicked at the sight of him and drove away as fast as they can, given San Wan's role is to hand out tickets for parking violations.
Xiuming (played by Fiona Xie) actually operates a stall at a night market, and even if when she was first shown with her mother Nancy (played by Chen Liping) when it was happening in the day, it does not shut during the day as goods and wares and food are still being sold.