Even if Tom Hank&rsquos &ldquoThe Terminal&rdquo may be your favourite watch, getting stranded in the airport due to a last-minute flight cancellation never feels good. Unless you are in Singapore&rsquos massive Changi airport, which has too many things to discover, from a butterfly and orchid garden to a giant slide. If you ever find yourself stuck in a situation where your flight has been cancelled without notice well in advance, we&rsquove put together a list of things you can do to ensure you reach your destination.