The plea bargain on the drug deal will mean many years in prison, a felony record, so RC is not getting a pass on the drug deal.
We also don't know what RC has told LE about Haleigh's disappearance. He may have told everything he knows and many things he suspects.
As I recall, Hope had a chance to make a deal for some kind of first-offender program, but she lipped off to the judge and pretty much refused a deal. Very stupid choice. I have no idea about Donna. I am not even sure why she's in the case. Which lead me to the next point--we don't know all the ins and outs of the drug case. The state may be trying to avoid the expense of a trial but in order to move the case, there has to be some reduction in the very high sentences in Florida drug cases. No one is going to plead and still do 35 years in prison for illegally selling prescription drugs. It may be that the state has decided not to offer Misty a plea in the drug case--and therefore they are looking for testimony. We think the case is a slam dunk because of the video, but the prosecutors never rely on just one piece of evidence.
As to RC getting a pass on the murder--as I said in a post above, I think the plea deal in the drug case is an indicator the LE isn't looking at him for Haleigh's murder. They are looking at the one person who isn't getting a plea deal. We don't know what RC knows or what he has told LE. I am
still waiting for one statement from LE that Ron has withheld evidence, refused to cooperate, or lied about anything he has said about that night or one statement that contradicts RC's accounts of his whereabouts. it's clear to me, at least, that LE doesn't see RC as a suspect in Haleigh's disappearance or death.