Engagement pictures in my opinion, should always be included in any wedding package. It's a great idea to have an engagement session with your chosen wedding photographer.
There is much to be gleaned from this as far as what poses, expressions, etc. suit you best. Consider your engagement session as a trial run. What it will definitely do, is help you to relax in front of the camera, and your photographer. When the wedding day arrives, you will be much more at ease as you are photographed, and that will result in better wedding photographs.
Much more than you might think, a great wedding photographer should be an invaluable figure in your wedding day, helping to make sure that everything runs smoothly, and on time. Seek their advice, it will help you in many ways.
There are of course photographers that want to only take photographs, with no involvement in anything else, and that's fine. This just isn't my approach - you can benefit from the years of experience I have amassed, and it's freely available to you at any time.
Though an engagement session involves photographing two people, I will often take a little time to take individual portraits.
Some Engagement Session Advice
As mentioned earlier, and engagement session should be seen as a trial run for your wedding day. This advice is for brides, the boys don't worry too much about their hair and make up!
Assuming that you are a bride, you would obviously want to look at your wedding pictures once your big day is over and think "my hair and make up looked so beautiful", right? That's the perfect outcome, to be extremely happy with how you looked.
Make up on camera however, is different than it is to the naked eye. In my opinion, it looks heavier in an image. This is of course best discovered before your wedding day.
Your engagement session is the perfect way to test things out. Have your hair and make up done by whoever will do it on the wedding day, make sure that they snap an image or two on their phone for future reference, and let's take some engagement pictures!
There is one other really important reason to do an engagement session. It's FUN!