If this has not been done, you are not required to pay the SGD 15 during check-in. Your airline will absorb the service charge. Passengers who are in transit for less than 24 hours may leave the airport without having to pay the service charge upon departure from Singapore. The local currency is Singapore dollars and cents. Notes come in denominations of SGD 2, SGD 5, SGD 10, SGD 20, SGD 50, SGD 100, SGD 500, SGD 1,000, and SGD 10,000.
Most banks handle travellers' cheques and change foreign currencies.
However, some banks do not have foreign exchange dealings on Saturday. Passports are required when cashing travellers' cheques. A nominal commission may be charged. Should any shop insist on adding a surcharge, contact the respective card company to report the errant shop-owner. Currency Other than the Singapore Dollar, the US and Australian Dollars, Yen, Deutsch Mark and British Pound are also accepted in most major shopping centres and big departmental stores.