There are usage fees. You can purchase from a variety of plans and the fees will be charged to your shipboard account.
You can purchase a wireless card for your laptop at $10 per day. Or buy 100 minutes for $55. Or, if you're hopelessly addicted, you can buy 250 minutes for $100.
At last we're on a ship where anyone in our group can freep in his/hers own digs, not in some internet cafe at the other end of the vessel.
Leni
See reply # 73 on the Bahama Mama Q & A thread for more info on cruise tipping.
Leni