I was afraid to answer for fear of being off topic but it would be rude not to reply.
As much as I hate to say it, it is obvious is parents are not being honest about what happened that night.
The inconsistancies are glaring. The behavior is so beyond "normal" to me. I don't know how to think abductor from that. I feel they tried to point things to a certain scenerio which to me says staging.
IMO, the inconsistancies cannot be merely from alcohol to confusion. Sadly, that points me to think they know far more than they are telling. If your child is missing every details can mean something. Honesty, not defensiveness, should be above all most important if you want your child found. No, it is not ok to hide details to save own skin. If they are not not being 100 percent forthcoming, they are not doing everything to find their child. I will let that comment stand to interpretation to what that means to me.
I do not buy they "didn't know the area well enough to pull this off" nor do I buy "there wasn't time." I will go into my reasons in other threads I imagine.