You may want to look into an EyeFi. http://www.eye.fi/
I haven't used one myself, but it's basically an SD card with a built-in WiFi adapter. You can then transfer files over a WiFi network to a host PC (I beleive peer-to-peer networking is also supported, so you don't need a 'hotspot'), and works with many photo-sharing sites as well (SmugMug, Picasa, etc...) to automatically upload photos. There is an Android and iOS app as well, which should allow you to transfer the files from the card to the tablet (maybe directly to the memory card), though I'm not familiar with all the functionality of the app.