With a full suite you can get the alcohol drinks from 5 to 7 for free in the suite concierge lounge plus all of the water and soft drinks you can handle throughout the day. Ditto cappuccino and espresso - you can use that machine 24 X 7. And you'll get a full minibar set up too. You can add the packages on embarkation day if you change your mind, just remember you can't buy just one, you'd have to pay for both of you. It might be cheaper to buy your wife a WiFi package.
ETA: Meant to clarify that your wife probably wouldn't need a soda package if you are in a full suite. You will get 6 sodas in the mini bar set up and as I mentioned you can get more from the suite concierge lounge for free so you can keep your fridge loaded. You don't have to consume the drinks you get in the lounge, you can take them back to your suite. And if you choose a "regular" penthouse suite that means walking across the hall with them.