I love your Christmas model,I can smell the ginger bread.
you can control the glow on the tree lights,
by leaving your glow on, then grouping your tree lights (one at a time or the whole group) and re-name them something like tree lights glowing. bring your tree lights into choreography, click on choreography, and see from the list, is glow Radius, and Glow intensity.selecting between 0 to 400 will cause a glow around the tree lights when rendered.
you can click your tree lights off and on, at the active button, in choreography. to get the effect of blinking.
then bring in the rest of your models in the same choreography. hope this helps.