Spending a day on a boat in Bocas del Toro typically requires copious amounts of ice cold beer. There are three popular Panamanian brews: Panama, Atlas and Balboa. My personal favorite is Balboa, which is a light and refreshing beverage. Also, it is very accessible since there is a distributor right on the water in Bocas town.
Bring in your old crate of empty bottles and get a replacement crate for less than $15 for 24 beers in a bottle. Always go for bottles. The cans have a different and in my opinion, unpleasant taste.