Flower arranging

I cut some branches of serviceberry to go with three daffodils (three quarters of the total number of daffodils in bloom so far - one of these years I'll plant some early varieties - in the fall I never remember how pathetically eager I am for blossoms - any blossoms - in the beginning of spring) on the table for Easter dinner. The branches had buds, but not much color. Now I think the buds are bigger, and showing some white. Will they open and be impressive? Or just fall off. Might help if I renewed the water in the vase.