I'm in a similar situation. I booked LAX-DXB-JNB. We're both in F on the first leg but DW is in Y on the 2nd leg. It's also for the summer, so I'm hoping another F or at least J seat opens up before then.
I just hope it opens up period. Wether before March 22nd or not, I'd take another F seat either way. At least I will have snagged up one for pre-deval prices.
On that note though, I did come across something weird when checking online:
This picture seems to indicate that the only open F seat for my flight is in fact my seat that I have not selected yet. This made me panic just a bit as I must figure that if all other seats are taken there won't be a way for another seat to open up in F.
Then I checked Orbitz and see that as a matter of fact it seems that my seat is the only one taken out of the CX inventory and that all other seats are still available.
So why would CX show all F seats as being taken/blocked on their website then?