Perhaps the lliberia on the vara de rey in ibiza but i doubt it, they won't have it in english on the day it comes out as it has to be imported from the uk i expect.
there is an english supermarket called thomas greens in san antonio near the hotel bahia and hawaii, that sells a few books, they have a website so maybe you could ask there???

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Can't you just order it from a UK retailer than is prepared to ship to Spain?

Why not get it delivered to your home address so as there is someyhing for her to look forward to after the holiday?

You can sometimes get pre publication editions from W H Smiths in departure lounges. Check it out !

Very much doubt that the last Harry Potter, which is tipped to be the biggest selling fictional book of all time, will be pre-released in an airport lounge.

Thank folks, we have it sorted, we know a family who is coming out a week after us, and staying in my friends appartment, same building we are in . So I will get her to bring one over. Will get them some beers and bits an peices for when they arrive . Favour for a favour lol