(((((((sabau))))))) Thanks.
I guess that's true, but I could have got my supervisor into trouble...I was worried I'd get fired for a while!

And I'm not very good at not being hard on myself.

But that's a good point.
It's funny, with my violin playing I've never had a problem with making mistakes - I'll just carry on and finish the piece - but with anything else it turns me into a wreck.

I'm definitely going to try and ask about alcohol from now on, though! Even though I hate bothering the other staff, and it can be hard to find anyone to ask anyway.
Thanks! This was just the start of a bad evening at work - I also had cheques that didn't print, a card reader that broke down and a till that wouldn't let me sign off - guess I should be proud of myself that I didn't burst into tears and run out the store, or something.