''....I noticed that several of the bottles had the names of the 'hard drinking eight' on them. Finally dawned on me that probably this is representing the 'bottle keep' service that they do (especially in smaller bars) in Japan. Basically, you buy a bottle of your favorite booze and leave it at the shop. The shop will hang a name card very similar to what you see in the graphics around the neck of the bottle, and every time you revisit the bar/izakaya you can request for your bottle to be brought to you. Depending on what you request with it (ice, water, soda water, distilled essence of innocence, etcetera) you might have a small service charge, but other than that you buy your bottle and drink to your hearts content without having to pay per drink....''