I agree with Marty. We plan on making a stop at the Post Office on Front St. and pick up a BTL calling card for our calls.
Not sure of your particular circumstances, but in our family, my mom is the only one with a number to where we can be located. Anyone wanting to contact us on vacation must go through her to get the info...and she's the best about filtering for us.
Also, while we're there, we'll hit the internet cafe & send a mass email to our family/friends to let them know we're doing just fine. If you use Hotmail or Yahoo!Mail this will be easier because you can setup your address book there.
Probably more than you wanted for an answer. Sorry 'bout that.