2. DON'T have a mega-hen
Hen dos and stag dos used to consist of one drunk night out. Now they can range from anything to a long weekend in Las Vegas to a week in a 5* spa. But don't force your poor guests to spend hundreds on the pre-wedding - that way they'll be sure to scrimp on the wedding gift.
3. DO choose your bridesmaids wisely
If you must, have just one - or at least two. But do not have an army of bridesmaids. You don't need to prove how many friends you have. As Flora Watkins says: "Unless it's a royal wedding, more than six bridesmaids - of any age - is excessive."
4. DON'T have a hashtag
The trend for professional websites and personalised hashtags has got out of hand. Stick to the old fashion simplicity of a professional photographer who turns their day's work into a beautiful coffee table photo album.
5. DON'T ask for honeymoon donations
Crowdfunding for a wedding - whether it is for a lavish honeymoon or your new home together - is simply unacceptable. A traditional list, with plenty of differently priced options, is a much better alternative.
6. DO go back to basics
A wedding doesn't need to be about the party favours (which everyone forgets to take home anyway) or having the best bridesmaid dresses. As Giles Kime writes: "The only essential ingredient is a big helping of sincerity - and a little less triviality."