If you take the long-distance bus from Shinjuku to Hakata, it would be a good idea to buy a lot of canned beer and shochu highball for staying up all night drinking. For side dishes, fried chicken, pork cutlet, and French fries would be better. But dry foods are no good because it is too noisy when you eat them. Being well prepared will ensure a nice bus trip. However it is none of my business what happens in Hakata at your arrival. Enjoy responsibly. Thanks.