I hope you are still on hubpages munity. Please don't reject your daughter-in-law over such a minor infringement of your expectations. This will hurt your son and I'm sure that is not what you intend.
Think about yourself as well. Do you look forward to seeing your son often? Do you look forward to having and seeing grandchildren?
You may think you can have a relationship with your son while distancing him from his wife. If he allows this, he is choosing you over his own new family.
I hope you will not put your son under this kind of pressure. He would be right to choose his wife and his new family (meaning he and his wife and any future children) over you. This would I'm sure, hurt him enormously.
Please choose wisely and support him in his relationship with his wife and reap the rewards of seeing their relationship flourish.