Currently in Changi - UA only opens up 3 hrs prior to departure and currently security are only accepting boarding passes issued by checkin staff (no emailed printed boarding passes currently accepted). so landside the PP lounge at T3 has come to the rescue - I have 2 PP memberships - one from HH amex (10 visit/yr I think??) - never use - have to dump this card next year and sapphire preferred - which I believe is unlimited visits - I think I can just swipe away on the sapphire preferred membership but not sure.?? desk staff were unsure.
BTW at this lounge (Haven) they accepted proof of reservation only (didn't need boarding pass) and digital PP card... which is just as well as I forget where I put my physical card...