I had the opposite experience with the "babysitting" issue.  We had a newborn son around the time there were weekend classes that required overnight stays away from home once a month for several months.  (This was the summer of 1998)  Although we had a newborn, we were "encouraged" to attend the classes and leave our son with people we barely knew.  Of course, we gave in and did it but I still kick myself to this day! 
Another "unwritten" thing we dealt with was the issue of breastfeeding.  After giving birth to a 10# child via emergency c-section and developing severe mastitis in both breasts, I was harangued by my branch coordinator and limb coordinator for "giving up" on breast feeding.  I stuck to my guns on this one, though! 
What about the policy that "stated" that if only one of the spouses could attend a meeting, it should be the husband? 
Or how about having leadership "insist" that we should continue to hold fellowship in our home even with a newborn AND me being sick?