I haven't been enquired for wc because i've only been going a year, but yes i've had two.
I also know quite a few people who've had them. They go on for months, sometimes over a year, and they can destroy peoples lives and leave them very bitter.You might gather from my posts that i also like to read business books, and all the big boys such as gordon ramsey, richard branson etc have had them too. They don't fare any better than the rest of us.In jeffery Archers prison diaries many of his cell mates had had them.
He tells a good story of a restaurant in london, a famous one, that didn't accept any credit cards and only took cash.The owner was quite brilliant, none the less the bill was two million and four years.
If you get looked at they most probably would ask you to account for your cash.