Board Thread:Questions and Answers/@comment-32724723-20170803150930/@comment-30750174-20170804143155

I personally don't bother with sparkling (though I am close to hardcap), but you probably should sparkle your fleet for expedition 21 since Great Success on that gives you ton of resources. As time goes on, you will also want to include some daihatsu carrier DD/CL in your expedition fleet for extra resource gain, for beginners Mutsuki and Kisaragi will do the job (with the addition of Fumizuki as well, though her kai ni is much higher than the other two). Keep in mind that the expeditions that require drums have a chance for great success even if you're not sparkled, and carrying additional drums can increase that chance a bit.