I’m on the 20 September departure too, and have booked the Hilton at T5 for the night before and parking my car while away. Haven’t stayed there before, but it’s only for one night so am not too bothered as long as I can sleep! Will need to catch the Hoppa bus to T4, but have used this lots of times before. I’m starting to really look forward to the trip as it’s a new part of the world for me, I look forward to meeting you - are you doing the Singapore add-on as well?