Board Thread:Fleet's Prepared-ness/@comment-26644816-20151027001146/@comment-26848183-20151027180222

Well then. I didn't read carefully enough. Sorry Aclone.

If the OP is interested in getting more carriers before the event, world 2-5 is also a good alternative, although it will probably be quite difficult with your ship levels.

It'll drop Hiryuu and Kaga like world 3-3, alongside others like Akashi and Taigei. As a bonus, it will help work your way towards getting the monthly medal if you run the map enough times.

But I don't know if I'll really recommend it though. Events typically take me 200-400 buckets to clear depending on the size of the event. As an example, I consumed over 800 buckets last event after clearing and farming. The OP will probably run out of buckets if the OP decides to farm carriers now.