Originally Posted by
aster
Is it feasible to book such a ticket and then use 2x2 vouchers to upgrade from prem to biz on the FRA-SIN and SIN-SYD segments only? Can I check before-hand that such an upgrade using vouchers will be available so that I don't buy a ticket and then find out I cannot use those vouchers?
If there is award space currently available then your upgrade would clear immediately.
If not, for LH you might be able to waitlist.
Not sure what your experience with the SQ segment is going to be like. In a similar itinerary last month M&M could never upgrade nor waitlist my SIN-SYD and SYD-SIN legs, despite me calling in every couple of days and there being plenty of business inventory available for cash fares.