Riding at abbeyard is permitted, though limited. Bikes should be registered still, Rec Reg or what is known as a TAC85 cover is acceptable. We are working on getting insurance sorted to get some other ride areas available for non licenced riders. But that is proving to be either slow or involve some costs to members that we feel should not be so high.
In any case, I would highly recommend a rec reg kit on the YZ as it is really great cover at minimal cost. Plus you can grab it for a ride as well.