This is a good link and, as I see it, pretty well sums up the situation. The question as to whether the strikes will go ahead and on which days is, unfortunately, in the lap of the gods. As the Independent correspondent states, just posting notice of the strikes has caused potential customers to change their holiday plans. On that basis, the Spanish government might face off the strikers on the basis that the tourist economy has already been damaged and they therefore have little to lose. Politically, it is quite likely, since the current President, Zapatero, is unlikely to seek re-election next year, the person waiting in the wings, current deputy prime minister Rubalcaba, as been taken ill, and there is no other likely contender. So the current left-wing government is likely to lose the elections and therefore probably feel they have little to lose by facing down the strikers and going ahead the the privatisation. In short, it's likely to be quite a mess, unfortunately.