Please, Please, Please be sure to check your passport.
Nothing is more deflating than to arrive at the airport and be turned away for not having a valid passport**. It DOES happen.
**And it must be valid for 6 months after your return date.**
Just to be clear, it’s worth repeating – your passport must be valid (not expiring) for at least six months beyond your return date.
Many countries are enforcing this now. You may read that some people do skate by, but don’t chance it.
Here is a link to obtaining or renewing a passport, and current travel safety advisories:
http://travel.state.gov/