We will be spending 6 hours in transit at KL airport in December, from 3 to 9 in the morning during flights between Sydney and Hanoi. We are a family of 5 and I'm wondering if it's worth buying access to the premium lounge? It will cost us around $325 for a 3 hour pass. I don't think we'll be hungry, just tired. Is there anywhere else in the airport to rest and/or eat during the early morning?