Does the church or chapel that you're using have photos of what it looks like at Christmastime? I've always said that, when we
do get married, I want it at Christmastime, since our church is decorated to the absolute hilt, with hurricane lamps & greens at every window, evergreen boughs with either magnolias or poinsettias, and trees. Why pay for more when there's already a lot of decoration? Your
daughter should be the star, after all!
Also, between my first marriage, and when I talked to our church's wedding planner, there has been a TON of changes - so I'd start with the venue, and see what they allow and what they'll have. For instance, pew bows, a consultant, and Herbal Tea in the Bride's Room

are all part of holding the service in the church, while rice, bird seed, and confetti are NOT allowed.
From there, I'm going to bow to Tippiechick!