For a media buying rookie... Although I've done pof, fb, and sitescout
I will follow any rules and regs, I just don't like having to wait 24 hours for stuff to get approved sometimes. I always figured there would be quite a few without approval processes but I've checked out like 5 now and they all seem to have them.
Many times its the advertisers requiring manual review of the ads to be used so it can be out of the networks hands...
I wouldn't hinge anything at all on this.
Just build it into your process and submit ads presuming they won't be available to run for 48 hours.
Sidestepping approvals is not a good thing for the traffic source in the long run (and thus for you), and isn't much of an advantage to you (though it may be perceived as one).