When I went through and my flight was from C the lounge/bar in B was full so could not use it.
I am boycotting Costa these days as can not obtain the reassurance I have asked for about the Costa Foundation that funding/guarantees are in place to ensure that teachers and equipment are included in the money being donated to build schools in Columbia
Unfortunately MAS gave me some very good prices for my next two trips to Asia so much as I enjoyed the Emirates experience (my first I should add) then no short term plans to fly with them again