cherrymeg,
Bookie was a freshman at Northview HS, about to be a sophomore and JB and Tracie were about to be seniors. Apparently, JB and Tracie knew Bookie.
On the night in question, JB and Tracie ended up at the BP gas station in Headland, after they gave up trying to find the field party in Haleburg from the hand written map/directions. This is the gas station, where JB called on the pay phone to her friend who was hosting the party, but she did not speak to the friend, but spoke to friend's sister. Bookie ended up at the gas station as well. JB and Tracie told him about the field party and stated they couldn't find it. They gave the map to Bookie. Then JB asked Bookie for directions to get to Midland City from Headland, without going all the way back to Dothan. Bookie gave them these directions and JB and Tracie left in the direction that Bookie had just given them. And Bookie and his friend left to go find the party, which I think they eventually did. A Law Enforcement Officer, I do not recall his jurisdiction, confirmed seeing JB and Tracie at this gas station that night.
My recollection is, that one of JB's sister's asked Bookie about that night, and that is what prompted him to make the video you posted.
Also, I believe the same sister confirmed that JB had a cell phone. However it was either the pre-paid minute plan or her plan had a set # of minutes and she had already used up her minutes. Also, in 1999, some of the places where they were driving that night between cities and rural, would not have had great service, if any service.