In addition to disclosing their final offers to the arbitrator, do the parties disclose them to each other?

Yes. In other contexts, experience has shown that this type of arbitration prompts parties to make reasonable offers and demands because the arbitrator will ultimately select the more reasonable of the two offers. Moreover, experience has also shown that utilizing this kind of process tends to result in more voluntary settlements because the parties are more encouraged to make reasonable demands and offers. Thus, having the parties disclose their final offers to each other is consistent with prior experience with this type of arbitration.