I haven't read all 28 pages of the thread, just the first one, so it's probably that this has already been mentioned. Could it be possible that something happened before you were in line behind Liam? He went to a bar in the casino and had to show ID? He paid for a pack of gum with a credit card at the gift shop? They have cameras all over. It's possible that they tracked him back to something that, even if the employees of the casino didn't know they were involved.
I'm about to sound like I'm arguing on the side of believers everywhere again.
No. John Edward does not use credit card receipts. That it unnecessary for what he does, and if he DID use something like that, then he would have a LOT more hits than he does now. Additionally, in order to see that the names were in the wrong order, he would need another from of ID (which had his middle name as his first) to compare. Otherwise, you're just looking at someone's first and middle name. How do you know that they use the middle as their first from that one piece of information?