Chixter: To say we have unfettered "free will" to make any choice within the multitudes of choices is not accurate.
We do not have, "unfettered" free will in this VR. The nuance is that we make free will choices within our limited decision space which is influenced by just about every variable we encounter in this PMR, from ruleset to beliefs. Our reality(VR) gets individually rendered to us probabilistically with the future not yet determined until it's actualized. Through our intent, we interact with the data in a particular way and modify it.
The computing of our experience and interaction is done at the IUOC level while the avatar and VR data-stream are completely external and independent of us.
The IUOC(individuated unit of consciousness) has a superset of our, "local" free-will that we have in this VR we are incarnated into as avatars. That superset free will, also called, "Absolute Free Will" refers to the IUOC's inherent ability to interact with zero constraints over the RWW(reality wide web) which is our netted network of consciousness communication. This entails no restraints on how an IUOC may choose to subjectively interpret a data, stream, modify it based on subjective interpretation, and what it may choose to output back into the RWW.
And to a degree, that is what is happening in this VR, as IUOCs individually receive the data-stream, subjectively interpret it, and send output back all the while this entire frame of reality is independent and seperate from us. The purpose for the virtual reality is to provide a platform for IUOCs to interact with each other by defining a standard of existence and communication through the rule-set. The main focus of consciousness evolution here is through interaction with other free-will IUOCs interacting with this data-stream.
Now, at this point, it should be clear that the discussion of, "free-will" is a meta-reality subject and until we can look into the source code or interpret how reality cells(most fundamental, "building blocks" in this system) create free-will - we will only have to postulate from a PMR avatar perspective or make logical deductions, or assume what NPMR entities tell us about the inner-workings. Contextually, in terms of this system defined and examined by Tom Campbell, free-will is a also a logical necessity defined in Sainbury's quote. Hopefully, that does not confuse you more.