The biblical model of worship is a covenant experience (often a meal) whereby we actualize past experiences in remdemptive history and apply them to ourselves.
Take the Shabbat (sabbath). The meal is a covenant meal, celebrated at Friday dusk to commemorate the completion of God's creation of the world. By participating in the meal, at which the biblical narrative of the event is recited, Jews celebrate not only that they are a people in covenant with God, but that he created them and continually creates them, even through the bread and wine.
Take also the Passover. The meal is a covenant meal, celebrated on Nisan 15 (or is it 14?) to commemorate God's deliverance of the people out of Egypt. By participating in the meal, at which the biblical narrative of the event is recited, Jews celebrate not only that they are a people who were saved from bondage by God, but that he saves each and every one of them individual. Jewish children are taught to think of they themselves as being brought out of Egyptian bondage through the eating of the Passover meal.
This is the biblical model for worship. There is praise, and there is teaching, and these are both good things; but they are not the primary institutions of worship in the covenant community.
Our covenant symbol is Holy Communion. The meal is a covenant meal, celebrated on Sunday morning because this is when God finished his new creative work, by which we are (in baptism) united to him. By participating in the meal, at with the biblical narrative is recited (the words of the institution), we celebrate not only that we are a people in covenant relationship with Christ (though the incarnation, crucifixion, and resurrection Communiom commemorates), but that through the meal he continually saves us and applies his death and resurrection to us.
And so I really can't consider any service that doesn't celebrate the Eucharist and understand it as the service's centerpiece as following the biblical, divine order of worship. It is the whole reason we moved our services from Friday dusk to Sunday morning.