I've Crossed The Rubicon And Bought An iPad Mini - Got Advice For Travel?

I know it's gonna be busy in this thread Monday, but help a brother out, will ya?

My mini is three days old and I go to Europe in 4 days. First stop Israel. Of course I got cellular w/ gps.

1) What apps do I want?

- maps

- photo editing

- posting to facebook without facebook taking over my device

- posting to G+


PS - also, any one have advice on sim cards in Israel. I'm thinking any convenience store will have them, but not sure