In the freezer, I’d say 6 months (but a half full bottle may freeze — there’s enough fruit juice in there to allow freezing, even with the alcohol). Fridge, 2 months. Out on a shelf, drink in a month or it gets skunky and particles start to collect (tiny pineapple or what-have-you pieces). If you strain it with a coffee filter rather than a mesh sieve you can extend the life by a few weeks.