That's interesting about what you were told re your Apple devices. My iphone charger, my laptop charger and all my camera chargers are all rated for 100-240V and 50/60hz. So all I need are the physical adapters to plug into the various country outlets. I have those from previous travel.
With the World Travel kit, besides the outlet adapters, are you getting any transformers or power supplys that are different? Or is it just a kit of plugs for the various outlets?
Also, I am adding the iPhone International data plan to my account Sunday so I'll have access to data while over there. Be sure to read the AT&T international travel recommendations for the proper settings for your iPhone so you don't slip and access texting or data while roaming....very $$$$$.
We'll be checking into the Marriot in Prague on 09/25. See you shortly thereafter!