I got my packet a few days ago and it said free internet access - I'm assuming that since you have to give them your sign and sail card to rent or access a computer in the business center, that the encryption will show if you get free internet access or not! I don't think you will have to "rent" the laptop - it should be free if you are a platinum member!
I've got number three on Princess with number four coming up and need to get a couple of more under the belt ASAP!