One last post related to traveling without your children. Travelin' Mom and I are both pretty obsessive trip preparers; we usually do tons of advance research, make packing lists, and try to plan for any possible contingency. That said, we both had a head-slap moment when, while discussing with Gram the plans for dropping off TJ for the weekend, she asked whether we had thought about signing a power of attorney form so she could make any emergency health care decisions for TJ in the event we couldn't be reached. We both looked at each other like, "No, but that does sound like something a smart person would do, so maybe we should."
The form may go by a different name depending on which state you live in, but it's usually called something like a Nondurable Power of Attorney for Physical and Health Care of Minor Child. What that mouthful really means is that you're providing your minor child's temporary caregiver with the authority to make decisions related to your child's health care, should an emergency arise while you are unreachable. The actual document will spell out the specific authority you are providing, as well as place a time limit on that authority (hence "nondurable", or sometimes called "limited").
Some pediatrician's offices carry the form. You can also download one for about ten bucks from websites that provide legal forms, like this one. Thankfully, the cell phone age makes it harder and harder to be unreachable. But this power of attorney form definitely seems a perfect example of better safe than sorry.