I am getting married this summer and my sister in law is having a baby and he will be 3 1/2 months old for the wedding. My sister in law feels strongly about having the baby at the wedding because she feels he will only sleep the whole time. It will be an evening wedding and my fiance and I feel the baby will be too young to attend. If the baby does not attend, he will be cared for by his grandparents, which is exactly what will happen when my sister in law attends two other weddings over the summer. Since there is already a sitter in place for the baby, we dont see why they rather not bring the baby and try to enjoy a night away. Please give me your opinion about the situation.