I have sailed on Adventure several times. I have had the $100 per week package both times. Here is some information not readily found about the package.
1. You are given a new phone for the cabin and some fairly simple instructions. To activate you must echange the current phone in the room with the new one. Connection is fairly simple. However no instruction are given for APPLE computers but they do work. It will require reconfiguring the Network preferences however. Limited help is available from the ship personnel.
2. This is a DIAL UP MODEM CONNECTION. I found that the connection dropped multiple timesbut you can work off line then connect to send. Obviously it is slow as well.
3.You CANNOT connect to a SECURE SERVER from the ship. So it is great for internet surfing and webemail but will not allow you to connect to a Home or office server.
4. You must return the package before 6pm on Saturday night or you may be charged for it however I have returned it as late as midnight with no adverse affect.
All in all, you need to be a fairly heavy user of internet and web based email to make up the $100 number but ist is convienient to connect in the cabin 24/7.
Regarding Wireless, the wireless system is definately not avilable in the rooms, probably the amunt of metal around. I saw several folks using the wireless in the internet lounge but did not try.
Hope that helps.