Subject + 少不了 + Noun/Verb
少不了 means "cannot do without" or "is bound to involve," indicating that something will inevitably occur or be needed. It expresses that A and B always go together, or that a certain element is indispensable. For example, 过年少不了吃饺子 means "Chinese New Year always involves eating dumplings."
搬家少不了朋友帮忙。
Bānjiā shǎo bù liǎo péngyǒu bāngmáng.
Moving house can't do without friends' help.
出国旅游少不了带护照。
Chūguó lǚyóu shǎo bù liǎo dài hùzhào.
Traveling abroad can't do without bringing your passport.
开派对少不了音乐和好吃的。
Kāi pàiduì shǎo bù liǎo yīnyuè hé hǎochī de.
A party can't do without music and good food.