Our deepest fear is not that we are inadequate. Our deepest fear is that we are powerful beyond measure.
1) Can the units see each other
Yes. The LOS didn't touch an obstacle in an intervening hex [rule 10.2].
1)2) what is the hindrance applied to the FP of the firing unit in the orchard?
1 for the Fence [rule 10.3].
Can you play a Recover card and recover units that were activated and broken by a previous order in the same turn?
Yes. Recover doesn't activate units, it activates a player [rule O22.1].