Smart advance planning advice from Laura:
Babies have immunizations at 2, 4, 6, 12, 15, and 24 months (your doctor may vary). The shots may cause your baby to be feverish, cranky or tired. If you can, schedule these appointments for late in the week, so that you and your spouse can prepare to miss work (if needed), or have the weekend for the little one to recover.
Also, another tip for working parents with kids in daycare (or heading off to kindergarten) — prepare for your kid to get sick. Plan for someone to stay at home with your child after the first week or so of daycare because it's inevitable–new care situation + exposure to new kids = sick within a week.