Hello, DD is taking an international excursion (without me) to places including Spain, Egypt, Oman, and United Arab Emirates, part of her trip is on land and part on a cruise ship. While I know that cell phones on the ships are near cost prohibitive (quoted around $3.30-$3.80/min) I would like to be able to communicate with her periodically. Does anyone have some input about what pre-paid intl cell phone companies to use (or which ones to stay away from?) A couple that I have looked at are Mobal and Terestial and it can be confusing. Thanks in advance!