Drink Greek when on holiday! It rounds off the whole experience.
Greek bottled water is far cheaper than the imported kind and just as good. If you want to get away from international brands of beer, try Mythos, brewed in Corfu. Also made in Corfu is the traditional ginger beer, known locally as tsintsinbirra. All the usual soft drinks are available on Paxos. Greek wines are excellent, and retsina may be an acquired taste but goes very well with Greek food and mezethes. If you find the flavour too strong, dilute with Sprite or soda. Koum kwat liqueur will no doubt be pressed upon you but it is extremely sweet - try mixing it with a little brandy for a more pleasing drink. Finally coffee - Greek coffee is strong, but you can choose to have it 'sketo' without sugar, 'metrio' with a little sugar, or 'gliko'if you like it sweet.