I have my first flight coming up on CX F from BOS - HKG - SIN. My layover in HKG is going to be about 4 hours max. Which first class lounge should I visit if I want to take full advantage of the amenities? CX 811 usually lands between 4:30AM and 5:30AM. The SIN flight leaves at 9AM. Is there anyway to find out which gate I would be leaving from?