Details are really important to me.
I've interrupted writing sprees to research the little things, all to construct realistic scenes of places I've never seen, traditions I've never practiced, clothing and accessories I've never worn. Some people may think it's a time waster, but I believe these details will help me create a believable setting for my manuscript. This may seem inconsequential in the big scheme of things, when we need to focus on dialogue, plot and character arc, not to mention writing a unique story that will appeal to agents, publishers and readers.
Oh, the pressure!
But, let us not forget the details. You will add life to your pages, you will set your story apart from the masses, if you remember to capture the details.