Stream it

If you don't have a SodaStream aboard, go get one. The storage saved over hauling cans of soda should sell you — not to mention the lack of your favorite soda on islands far away. I'm a Diet Pepsi guy and wasn't a believer until DP syrup showed up at Target. Now we use it for soda, soda water, tonic — you name it. A CO2 refill lasts about a year.