We just got back from a cruise on the Celebrity Silhouette and we had the drink package as a comp. What we found with the drink package was we went out more at night because we wanted to "get out monies worth". Also with the drink package we used it for waters and smoothies at the Aqua Spa Cafe in the mornings. I think we will get it again. One less thing to have on your room charge if you pre pay.
When we were waiting to disembark we heard a couple of guys saying they had drank 140 beers! They must have spent the whole cruise at the bar and in the bathroom!