Thanks all. Both our airline of choice as well as the Peruvian Embassy say not to worry about the 6 month issue. It's a recommendation, not a requirement and is meant for those fokls staying 90 days or longer, not for tourists like us who are there for 4 weeks.
Just wanted to clear up some questions regarding the passport expiration (expiry) rule for Peru and maybe some other countries.
Check the US Department of State website, select the country to visited, and go to the ENTRY / EXIT REQUIREMENTS section. That is what airlines should use to determine the passport eligibility to enter a country.
If in doubt, call the airline before the trip and confirm, print out the page and bring it with you when checking into the flight.
I just visited Peru from the US (as a US citizen) from Dec 20, 2010 - Jan 4, 2011. My passport expires on Jan 17, 2011. I was able to enter the country with no problems, or questions asked. This information can save you over $150 in passport expedition fees and overnight shipping charges.
