I know this is going to show my ignorance....but can you not sync the devices?
I know nothing of Dropbox or Google. I transfer my pics straight to my Ipad with the camera connector....but this is for camera's only. If you get a card reader adapter you will not be able to transfer music or any other files in this manner. You need to perhaps have a ride out to Manchester and go and see the young geeks in the apple shop.
They were very helpful to me(and kind)...even though I am a Batty old bird.
