Meanwhile, here is some clarifications that may help the OP.
celebrity offers a bundle package, called always included, or AI, which has three components. The first component is basic Wi-Fi. The second is gratuities for your state room attendant and dining room staff. The third is a drinks package, which includes gratuity on the drinks.
Taking them one by one, the OP feels that the Wi-Fi won’t be necessary however, it should be noted that their mobile phone will work on land while in Europe but not on the ship. So the wifi might, in fact, be useful.
the second component is the daily gratuity. If not prepaid, this will be added to the shipboard account on a daily basis. It covers housekeeping and dining staff. It does not cover gratuities on beverages, nor gratuities on spa services.
the third component is a basic beverage package and it’s gratuities. It does not include the mini bar, nor alcohol ordered through room service.
If you do not have a beverage package and you buy your drinks one at a time, they will add a gratuity to the price of the drink or, if you are sailing out of Southampton, the gratuity will be included in the price of the bank. The total will come out the same either way.
As I read the OP question, she can see how to order a beverage package pre-cruise and would like to pay the daily gratuities cruise pre-cruise also.
but she seems to be confusing the beverage gratuities with the daily gratuities.
to reiterate for clarity, The daily gratuity charge does not cover gratuities on beverages.if you don’t have a beverage package you will pay a gratuity on each beverage you order.