The correct reading is れいせつ. 礼 typically uses its On'yomi 'rei' in compounds. 節 also commonly uses its On'yomi 'setsu', meaning moderation or point. Wrong readings like らいせつ misidentify 礼, and れいせ omits the full 'setsu'. 礼節 refers to the formal and respectful conduct adhering to established norms of courtesy and decorum.

正しい読みは「れいせつ」です。礼は「れい」、節は「せつ」と音読みします。「らいせつ」は礼の誤読、「れいせ」は節の欠落です。礼節は、社会における礼儀作法や節度、丁寧で品位ある振る舞いを指します。