The BA North American RTW desk is in Toronto at +1 (800) 828-7797. If you book through them, just get the record locator and FAX it (along with your itinerary) to Ms. Sobhi in CAI (+20 (2) 574-7674). I suggest calling her first to establish the contact (+20 (2) 578-0746). Tell the BA NA operation that you do not need them to submit the itinerary to their rate desk. CAI will need to do that and they use a different rate desk.

If your ticket is >16 segments it will probably be hand written by Ms. Sobhi regardless of where you pick it up. (BA MIA told me Amadeus can print 25-30 segments if you know how to do it -- apparently CAI doesn't.)

There is no CAI-LHR business available on 26 Sep but there is plenty on 27 and 28 and on 3, 4, and 5 Oct. BA only has one turnaround flight a day in CAI, and it runs between LHR and CAI.