I'm trying to help a friend who has made two separate bookings.

EU - DXB r/t on Emirates
DXB - MLE r/t on Fly Dubai

As of today - booking it all on Emirates as a multicity is €500 cheaper.

There is a €100 change fee for the Emirates flights - does Emirates allow full changes for this change fee (e.g. to add the DXB-MLE flights to this booking) or only change of date / destination?

FlyDubai charges a €75 cancellation fee.

Even with the fees we'll get a couple hundred back. Unless anyone has any other suggestions of what we can do?