Thanks, we always go the 'earlier' one both ways.

To update on this, I've tried and tried for upgrades with miles but not available. So, because we each had 12,000 miles expiring soon we spent them on the Emirates High Street (and used a 20% disc code), getting a watch each! Turned out you have to pay VAT and shipping on your credit card which is understandable but annoying nevertheless.

With about 65,000 miles still left (and miles to add to this once we travel of course) I'll try for J to F upgrades closer to the time. I'm not sure how to use the calculator so roughly speaking, does anyone know what the following upgrades would cost?

GLA-DXB
DXB-KUL
KUL-MEL

MEL-SIN
SIN-DXB

We'll go for as many legs as we can.