Cloud License allows 2 activations http://www.adobe.com/legal/licenses-terms.html
-Install on a 2nd computer http://forums.adobe.com/thread/1452292?tstart=0
-Windows or Mac does not matter... 2 on the same operating system, or 1 on each
Check this link to see what is available for an ipad
You can use both the Windows & mac to make the presentation, to showcase them in I PAD, you will need to deactivate from on of the previous machine & activate the CC here.