The wine packages aren't worth the money in my opinion. Celebrity states the discount is about 10%...so why would you pre-purchase and lock yourself into x bottles of wine and only a limited choice.
OTOH, if you drink premium liquors then the premium package can save you quite a bit. At $12 a drink it can add up quickly.
You need to do the math...and if you think it is a close question, go ala carte.