From my observation over the last ten years, lots of poor circuit procedures and an expectation of priority to save them time. Lots of dubious VFR flying and no consideration for neighbours when climbing out in very noisey aircraft. When approached, couldn’t give a stuff. CASA informed, nothing happened. APF rep informed, nothing happened. Had a good conversation with a jump pilot who operated at a field owned by a parachute club (fly in visitors not welcome). He said whatever you’ve heard about parachute ops, it’s all true.
How it’s not mandated to be a charter operation for the tandem jumps is beyond me.