Board Thread:General Discussion/@comment-26571623-20150806044614/@comment-25689155-20150806055107

Well, you will surely get a few medals during the event, so you don't absolutely need a remodeled ship for the event, or if you're not confident in your fleet to reck the 4-5 easily, you may want to wait the end of the month to give it a try, after having beaten the event.

Or you can full sparkle your best girls, and try 1 sortie a day before event, hoping that it will go well. I just did it in 5 days, one sortie one boss kill, except for final kill, i switched to 5BB/1CV after two vain tries with semi-heavy fleet.

TL:DR You'll get medals in event, so if your fleet is ready, wait for end of event.