"Life should be free and happy, and you should enjoy happiness when you are drunk", which means: live freely and enjoy the happiness and beauty of life. It expresses the pursuit and enjoyment of freedom and happiness, and also conveys a positive attitude towards life.
The sentence "carefree life, smiling and indifferent to life" means: carefree life, smiling and indifferent to life. Expressed a life attitude that is indifferent to fame and fortune and detached from things.