Oh you sure can, but it's just....not the same? I went on a cruise not long ago, Virgin that doesn't have the drink packages. Instead they do prepaid bar tabs where you load an amount and get a bonus with it. I figured I'd be on vacation and drink a ton so bought about $500 worth of tab and got $100 extra I think. I stressed about whether that would be enough spending money even though my drinking not on vacation was way down. Well, I still hadn't spent half of it by the time the cruise was over and I still enjoyed myself plenty. I even had a couple of wild nights where I was a little tipsy but none of them I got flat-out drunk.
Bottom line...it's just...different. 🤷🏻♂️