Which route/airline did you book and which class?
Upgrade LX ZRH-NRT from P to O

How many pax and how many award miles?
1 pax - 2 eVouchers

How many days/weeks/months did you book in advance?
6 days

Were you happy with the award booking procedure (e.g. online/by phone)?
F cabin had been sold out for weeks.
Expertflyer alert for F inventory fired at T-6d showing the flight was now F1A1.
Single call to SEN line, evoucher upgrade cleared immediately.

How often did you have to check/call until you got the seats?
Once, made sure to call German-speaking SEN so call was done in 2 minutes.