i just sailed on the carnival liberty 1 week ago. The wifi is throughout the entire ship including all cabins. The signal was very strong. You could use your own laptop or rent one of theirs. The cost of minutes was .75 cents per minute without a package. The packages were 55.00 for 100 minutes or 100.00 for 250 minutes. There were also deals along the way to add minutes for less once you were signed up in the program. The only downside is the speed was terrible. It reminds me of dial-up even though they call it broadband. Still, it was nice to go on and grab e-mail daily.