SQ1 has been re-timed recently and now has a 2+ hour layover in HKG. We are on this flight this Friday in F (Dec 21..miss the A380 by a week ) and was wondering what the procedure is in HKG. Do we have to re-clear security there or are we free to roam the departure area of HKG? I understand that the SKL does not have shower or toilet facilities, so would it be possible to visit one of the other Star Alliance lounges to grab a quick shower or at least splash some water on our faces and freshen up? Thanks!