For further Update:
V 424 is actually Barcelona to Southampton (last 1/2 of the Istanbul to Southampton cruise starting the 7th). I don't know the galas on the first 1/2 but for this portion:
QV out of Barcelona 10/14/24 (or 14/10/24 for those so inclined):
Sea Day October 15- Gala- Black and White
Sea Day October 19- Gala Roaring 20's