Many people are arguing about the happiness and well-being of the Dragon Boat Festival, saying that commemorating Qu Yuan cannot be happy. Climbing mountains in midsummer, the sun is in the sky, and May is midsummer. Its first afternoon is a sunny day, so the fifth day of May is also called "Duanyang Festival". People celebrated the Dragon Boat Festival before Qu Yuan died, but it happened that he threw himself into the river during the Dragon Boat Festival. You will have the Dragon Boat Festival without eating zongzi or racing dragon boats. Without Qu Yuan's death, you will have the Dragon Boat Festival.
In short, it is wrong not to say "happiness" during the Dragon Boat Festival. Well-being is the premise and happiness is the expectation. You can use both words.
For the Dragon Boat Festival, you can't say "happy". Zhang Yiwu, a professor of Chinese Department in Peking University, quoted the preface of Tang Xuanzong's poem "Dragon Boat Festival Banquet" to refute, "Sighing the solar cycle, the beauty of the monarch and the minister is happy."