If C&C's is involved I don't think it would be just one bartender. I think the owners should be looked at. Seems strange that they have a website with a thread for people to show support for Natalee, a thread to link to the reward poster...but according to Beth, they wouldn't keep the physical reward poster up in their window.
I agree, the owners are involved. They'll want to keep the web site supporting Natalee as if they didn't that would be odd too. Wasn't Natalee warned before the trip not to go near C&C. They're well known!
I read something early on that Natalee's stepbrother, I assume Jug's son, who was familiar with Aruba had specifically told Natalee that Carlos and Charlie's was not a safe spot and not to hang out there. I wonder how long this reputation has been around.
And C & C hired the guy who provided the fake alibi for Joran and the brothers that lead to the arrest of the two guards and damaged the investigation at a crucial point.
You could always send them to Egypt or Saudi Arabia for constructive interrogation.