You can not collect Intel while under the effect of Sneak/Invis.
While gathering Intel you will not get aggro.
While gathering Intel Blockaid is activated. At completion, Blockaid is turned off.
You will receive EXP whether or not you have Allied Tags. In fact, you can complete this mission whether or not a Campaign battle is going on or not.
You cannot perform this mission if all outdoor areas within reach of the Orcish Hosts' forces are being controlled by the alliance. Use Deep Cover or Prying Eyes to gather intel in that situation.
Current intel on the defensive capabilities of enemy strongholds has been deemed insufficient. You are to infiltrate an Orcish stronghold in one of the areas near San d'Oria and gather as much data as possible.