F2Ps can't do fuku deals everytime it comes. Like HolotheWiseWolf said, it takes 3-4 months if a f2p saved their coupons. If you have issue with gaining coupons within that timeframe, look for ways to earn coupons and learn not to spend since there are some who have said they can't wait to spend while trying to save.

Don't forget that the event also considers ingots as well, so whales can easily do fuku deals everytime they want to.