KC Chiefs Guy

Anyone know how some of the so called deals on the cruise planner are figured? I have been checking them on a daily basis and like the deluxe beverage package shows 50% off second guest but the numbers don't add up even if you take in consideration the service (gratuities) charge. Also on the deluxe Beverage package plus Voom, does that mean its the streaming and you get two devices since you have to purchase two packages? I called RCCL and they could not give me a straight answer. They also couldn't answer if I decided to purchase Voom and stream for 2 devices at 22.79 if I had to purchase 2 of them or if it is a one time purchase and it will allow me to use on two Devices? Thanks everyone in advance for any answers to my questions