Let me throw a different angle on this......how big a difference is it to use an iPad to read news, sports, e-mail, etc versus reading a book on a kindle. Either way, you're relaxing and reading. I'm not a big book reader, but I love to read news articles and follow sports.
My real Aruba relaxing comes from walking around Renaissance Island or walking the stretch of beach between the Ritz and the Westin, depending on where I am staying. Drink in hand, no reading material.