Lord Vishnu is after all the God of Protection while Lord Shiva is of Destruction. Vaishnavites (Followers of Vishnu, I mean) hence, celebrate life and its pleasures. Dancing, Rasleela, Music, Beauty etc. come naturally to them without any philosophical tinge of fleeting nature of universe. Devotees of lord Shiva are always reminded about destruction, mortality, ephemeral nature of the world etc. May one is life-oriented and another is after-life oriented. Hence, the priorities differ, I think.