Join Date: Oct 2007
Location: LONDON
Programs: CX DM, BA G4L, QR PLT, EK PLT, Hyatt CC, HH DM, SQ SLTRE, BonvoyTit, UK SL, VS Wings, UA, DL, AA
Posts: 1,756
On use of vouchers I just reconfirmed with 2 different agents at the 9W CC and have never had issues - they were very clear
1) If a current platinum member is using his/her PLATINUM ELITE TIER VOUCHERS (not Jet airways citibank vouchers), they can be used for anyone to upgrade any fare - the only verification they require is the membership number and name of the person sponsoring the upgrade / giving the vouchers - to cross reference that said person is a Platinum card holder. They annotate the booking with the plat number of the person supplying the voucher.
2) A platinum card holder can him/herself use any vouchers to upgrade any fare (someone else's silver voucher, someone else or his/her own 9W/CITI card vouchers) - In this case the Plat number should be on the reservation.
Have done this for years now without any issue.