In this Money Matters report, Time Warner Cable News’ Tara Lynn Wagner wraps up her “Business of Marriage” series with a look at certain corners you do not want to cut.

There are whole channels dedicated to DIY. But when it comes to weddings, be wary about taking too much into your own hands. Jamie Miles of says only indulge your inner Martha on smaller projects that you can do well in advance.

"You don’t want to be up the night before your wedding. You don’t want to be putting all the flowers together and making sure that they’re preserved properly overnight," says Miles.

Leave that to the professionals, like Florist Caroline Bailly of L'Atelier Rouge. She says one of the costliest mistakes a couple can make is pinning their hearts on a certain look.

"Sometimes with Pinterest, all the brides and grooms will come to us with those lavish arrangements and they have no idea that it can cost thousands of dollars," says Bailly.

Instead, she says go to your florist with a budget and an open mind and they’ll come up with ways to prune the price tag.

"Work with seasonal flowers. I always recommend going with masses of flowers rather than mixing all types of flowers, which can bring the cost up," says Bailly.

Another area you want to go with a pro is photography.

"This is not something you want to DIY and hand someone a Polaroid camera and have them shoot the day of your wedding. These are pictures that you’ll have for the rest of your life. So if there is an area to splurge in photography might be one of them,” says Miles.

All of your vendors should work with a contract that you should read thoroughly before you sign.

You might also want to consider buying wedding insurance which can cover you if, for example, your venue goes out of business or if someone gets injured or sick and the wedding needs to be postponed.

"Wedding insurance isn’t going to cost more than $500 to $1,000, and when looking at the overall budget, it truly is worth spending a little money to protect, you know, that deposit," says Miles.

Finally, once the vows are said and the cake is cut, it’s off to honeymoon. A great way to save on that is to register for it, so guests can give you a romantic dinner instead of a dinner plate.

"Register for things that you’re going to experience on your honeymoon, a splurgy massage that you probably wouldn’t be able to afford. I think it makes your guests feel really good that they’re giving you something that you’re going to enjoy very soon," says Jessica Silvester, senior editor at New York Magazine.

Speaking of gifts, while money cannot buy a happily ever after, it’s a gift that never goes out of style.