Resolution number 6: Don't drink the water

Looking through the menu choices for the work dinner I see the following:

Mineral Water 1 Ltr Bottle - Still or Sparkling £3.95

Now this, in itself, is not surprising. The dinner is being held at a posh hotel. Ridiculous, yes, but not surprising. But this line is immediately followed by:

. . . must be pre-ordered and paid for prior to arrival, as this offer will not be available on the evening of party night.

Surely they can't normally charge more than £3.95 for a bottle of water?!

The dinner this year is a masked ball. I'm thinking of getting a highwayman's mask, as then I can rob people instead of being robbed.