I plan on taking my MBA and iPhone as camera. Germany/poland/Austria. First is it worth taking will it slow me up at bordors etc? I will need a backpack to carry everything I was looking as the Swiss Army on the Apple Stores website.(I want to keep all luggage with me on plane and trains!) I will need a converter to charge iphone/MBA. Also external battery for iphone! Is wifi hard to find? I heard ethernet at cafes are more common so would that be an issue? Any other travel advice or suggestions would be appreciated!