Greetings in that Divine and Most Precious Name of Our Lord and Savior Jesus Christ!
If David's "celebration" is to be considered standard practice for how we are to worship God, then why didn't Jews do away with all their rituals etc. and instead follow David's example? Probably because God told them how to worship. So why should we as Christians be expected to use David's example to model our worship after if even the Jews didn't? Certainly, Christ didn't tell us to.
I don't know about y'all,but within the Ethiopian Orthodox Tradition we precisely keep the worship traditions of King David in all of our celebrations, hymns, festivals, processions, pilgrimage marches, parades, etc etc.. Mahalet Yared
True we are making a specific distinction between Divine Liturgy of the Holy Offering and other worship and liturgical celebrations, however in here there is a shade of grey, before
the solemn Divine Liturgies on Christmas and Easter, a three hour prayer service called the Mahalet is performed by the non-ordained clergy (debtara), priests, deacons, and choir members who chant and hymn the great hymnals of Saint Yared composed for such occasions, directly inside the Church, before the Altar, with both drum and sistrum and prayer staff and accompanied by a kind of sacred dance.
Oh yeah, and here is the ruckus we've been making in Jerusalem
every year for at least the past 1000 which has never failed and continues to upset some of the more uptight Byzantines and Russians