I completely understand your desire to delay vaccinations, however, traveling outside of the US can present a risky situation for your family and, furthermore, for those around you after you return to The States. Even well-developed countries have high incidences of vaccine-preventable diseases that can lead to life-long debilitations and are potentially deadly. Several countries have serious outbreaks of Measles currently, with Switzerland and Israel "leading the pack" in number of cases every month. In fact, the CDC just recently released an advisory to healthcare facilities (including school health offices) to be aware of the serious cases of outbreak among unvaccinated children in the US. All of which have been carried over here from international travelers and thus have exposed many other people inadvertently. PLEASE research the country(ies) you are wishing to visit and set up an International Travel Health Assessment with your Family Physician as well as your child's Pediatrician. Also, do some research into the present health risks in your destination areas by contacting the local Health Department at least. The risk really is not worth it when you consider not only your family, but also all of the families you are in contact with once you return to the US. One more thing to be aware of, there are some countries in which you will be required to be vaccinated to some degree to be allowed to travel there.
Be grateful you live in one of the very few states that is so lenient in their vaccination laws. Most states require much more to be allowed to delay or forego vaccinations. Some states will not even allow an exemption without a documented medical reason that must be signed by a physician every year once a child enters school. Just something to think about.