Well old boy like everything else in life the world is not black and white rather it is tinged with grey as is the law. I had a root around and Karen is quite correct in that as long as you are not making a profit and money for the bingo doesn't directly change hands it is legal. All this came about because in Old Folks Homes and Centres games were being organised and eventhough it was only a cent the powers that be decided they were breaking the law. Valencia is the only place where it is not illegal for old folks and centres to organise bingo games for small amounts of money.
Now to come to the bars etc. here is what the link says: http://www.jugarbingoonline.es/es-legal ... utorizados
"The mere fact that in a cafeteria or nursing home they organize a game of bingo, despite what people may think, is not illegal, because the game in question is not forbidden; That's right, you can play, what you can not do is make money with it. And that's why, from time to time, news comes out that this or that cafeteria has been closed for organizing a bingo game ... because the owner was making money! So in those cases where there is no profit there is no major problem.
For example a cafeteria could organize a game of bingo, but not selling the cards, but giving them away with a drink, for example; "Have a beer with a potato omelette and participate in our bingo." Things like that are allowed; Now, preferably, the winning prize should not be money, but an object, such as a leg of ham or a television. It is also typical to see bingo games in some clubs (yes, that's right), because as a way round it with certain drinks you can play and win a trip, a motorcycle, alcohol-free bar, etc. Party on!"