I'll answer my own question (for the benefit of others - from 5/27 Red Zone at the LA Forum)
2. end of front stage rail
3. approx 100 - 150
6. Not tips just observations... bathrooms are very close (accessible to all GA), bar inside Red Zone, Process was very easy for entry into the LA Forum. (walk to the Chase/Forum Club entrance, closest to Kareen Street, hand the RZ girls your ID, they put 2 wristbands - 1 for GA and 1 for RZ on your left wrist - and an envelope with a raffle ticket, commemorative tickets and head inside.)
VERY nice experience... will definitely be doing Red Zone if given the opportunity again. You can see the Periscopes I shot (and my viewing angle) on my Twitter timeline @ThoseThingsILov
Thanks for the information. Had GA for LA1 and have Red Zone for LA4 - you've reassured me about the upcoming show. It sounds like they are letting Red Zone in before GA at the Forum? (I am thinking about taking my 9-year old daughter and just hanging out in the less crowded areas of the Red Zone - but if I feel like I am likely to get a great rail spot then I'll bring the husband instead).
I believe we left our car right before 6 and got to the RZ table at no later than 6:05. After getting our tickets/wristbands we walked right in (so I'm thinking 6:10) and GA was already inside lined up along the entirety of the rail on both the north and south side.
The apex of RZ "L" that was closest to the center of the stage was already 3 deep from the rail when we arrived. At 6:30 they drew names for the backstage tour, and by that time we had already visited the bathroom and gotten drinks.
Even at the rail where we were positioned (at the far right of the stage), there was breathing room.