When your friend’s father is nice enough to suffer through your presence for an entire weekend, and the only way you repay him is by drinking all of his scotch… you need a place like Zabi’s. Yes, the prices are steep. But you’re also in Southampton, and if you’re not a freeloader like myself, I’m assuming you can probably afford the markup. The selection is fairly comprehensive, and you should be able to find everything you’re looking for, including that bottle of Balvenie. Bourbon, vodka, gin, tequila, Zabi’s has had everything else I’ve tried to find, and the beer distributor next door has you covered if you need something to drink on a boat.