Celebrity Cruise- Summit- Alcohol?

Question

I am going on a 7 night cruise on the Summit and want to know about the alcohol prices. What are the packages available and what drinks are included in them? I'm a beer drinker but also like wine and rum. I just don't want to spend $6 a Budweiser especially if there is a better deal. Any tips? Is it cheaper to drink while at port? I'm going to the caribbean.