I was just told I had the Premium Upgraded Wifi. I can only assume that it is for the entire cruise. When I purchased and went to check out, it didn't ask me which day or how many days I wanted. They goofed up, and when you go back into the cruise planner, they fixed their error. They're just going to have to eat it.
Now, when I go into the cruise planner and select the 9.99 upgrade, and I go to check out, it charged me for the full 11 days, $109.89. Before, I was only charged 9.99 for each person - 19.98 for the both of us.