Some good practical suggestions, but very much a neo-Reformed Evangelical perspective on theology.
First, the good. There is a lot in this book that can be quite useful in planning a church-based wedding. There are checklists and practical suggestions for bit and little things that go into having a successful wedding and reception. The reminder that the wedding "isn't all about you" but a bringing together of two families, friends, and acquaintances into the sphere of the divine is valuable. The advice that a meaningful wedding is far more important than a lavish one is good. The warning that there is no such things as a perfect wedding is important to keep in mind. The best practical advice given may be to never go into debt to pay for a wedding (both the couple and their families).
Now the not so good.
The quoted works and end notes read like a who's who of neo-Reformed theology. There is Piper, and Keller, and Challies among this list.
The "gospel" is defined by the authors of this book as Christ's sacrifice and love for his people and his people's submission to Christ. Marriage is a pattern of the gospel and therefore the husband is to lead sacrificially and the wife is to respect her husand and submit to him. This is a classic patriarchal, complementarian view with which I and other Christian egalitarians have major issues. There is insufficient space here, nor is this the right forum to discuss all the problems.
The rest of the book is about how every step of the wedding process, from engagement through the planning, to the ceremony, and into the reception, should be a vehicle for proclaiming this "gospel." My thought as I read through the book was that if a couple was as intentional and explicit in "proclaiming the gospel" through their wedding process as is described and recommended in the book, the only people left to willingly attend the wedding would be like-minded folks. I can sort of understand that this is the evangelical mindset, but if I, as a Christian, albeit non-evangelical, think this is way over the top, what would non-Christians think?
The book disavows legalism, yet like many evangelical life application books, it gives many principles which sound like rules. The authors are explicit and careful to state that these are merely suggestions, but in the end, they are strongly recommended. Whether intended or not, it implies that "real" Christians will want to follow these principles and by not following them, a person can end up with guilt feelings. Now when I say this I may be projecting from my own conservative/semi-fundamentalist background.
Some examples of principles/rules/suggestions:
* Omit unbelievers from the wedding party
* Don't leave children up on the platform because with their antics they will distract from the gospel proclamation
* Make sure to have someone, if not you, explain the gospel during the reception, too
* Find alternatives to the boquet and garter toss because they aren't fitting for Christians
Even though I rate the book fairly low, I do recommend it for the more practical, planning tips and lists. I don't think I've seen such a comprehensive set found in one place before. I myself will skip the theology and suggestions that are based on them.