I just got off the Epic yesterday and we purchased an All-you-can-drink package. We ended up getting close to our monies worth, however the ability to order a drink at any time and not have to worry about wasting something I didn't like was great. Tried many new drinks just so I could, and always had a drink or two with dinner. The price was $49 a day plus gratuity and included beers $5.50 or less and achohol with a $6.25 price or less (Made no sense to us, and had to have it cleared up that it was the price of the "shot" or type being poured, not the drink price). This is my second time getting a beverage package like this, did it with Celebrity back in 2010. Both times, I felt like it was worth the price.
Not sure if anyone else has been on the Epic, but that is quite the ship. We had a great time despite reading some bad reviews. My first time on NCL, and probably wont' be my last. I was very impressed with the level of service and quality of food. This coming from someone who last cruised on Celebrity... (Yea it wasn't to that level, but still at a very high one). The ship is spectacular and had lots of great features that I really enjoyed, including some kick ass waterslides.
None the less, just wanted to throw my two cents in.