1)when do you roll for fighter escort rendezvous if Iwo Jima still in Japanese control. If zone 3, this makes sense. If zone 9, then no escort over Iwo Jima outbound and good chance of not needing escort on inbound if it is night over Iwo.
1. The point at which the rendezvous is rolled is dictated by the target rather than by whether Iwo Jima is in Japanese control:
Zone 3 or later if Iwo Jima is a target
Zone 9 or later if Japan is the target.
The historical note on page 4 of the rule book mentions that fighter escorts weren't assigned for missions to Japan until P-51 (and later P-47) units settled into the captured airfields on Iwo Jima. Before that, escorts were provided for missions against Iwo Jima only.
A -4 modifier applies when determining fighter escort availability in missions 1-15 on Table 2-8 EXCEPT if the target is Iwo Jima so it's less likely that you'll get any support against Japan in the early missions, as was the case.
2)If Iwo Jima still in Japanese control, do their fighters appear over Iwo Jima AND near target area(over Japan) or just over Iwo Jima.
2. Fighters will appear over Iwo Jima AND Japan in missions 1 to 10. Note on Table 2-9 that Iwo Jima has a -2 modifier when rolling for expected fighter resistance on Table 5-1. However, it's during these missions that you don't roll on Table 5-1 if it's night time over Iwo Jima on the in-bound leg.