Check alcohol limitations before purchasing any from the Duty-Free; limitations differ based on what you are buying, for instance, you cannot buy more than one litre of spirits or two litres of wine. In addition, you cannot bring cigarettes or other tobacco products from foreign nations into the country. While not as strict as many make it out to be, Singapore does have some laws, considered small offences elsewhere, that are taken very seriously. Laws against littering, smoking, chewing gum, jaywalking, public urination, etc. can, if not adhered to, land you in a lot of trouble.