祝你度过愉快的一天

中国移动的客服会对客户说：祝您生活愉快。

you can say 祝你今天过得愉快! but for one day we don’t say that much. however we say 周末愉快 more often。And we always focus on detail things. such as, if i know that you are going to play or have some fun, we will say 玩的开心

祝你玩的开心.祝你一天过得愉快！

玩得开心