Dreamworld's claim that it decided to cancel its reopening on Friday based on advice given by police is inaccurate, Queensland police say.

A statement released by Dreamworld on Thursday afternoon outlined that the cancellation of Friday's reopening was to give the police service the time it needed for its investigation.

"Dreamworld has been advised by Queensland Police Service that we are unable to proceed with tomorrow's memorial service as planned," the statement read.

"Obviously the integrity of the Coronial Investigation is of paramount importance and postponing the service will give QPS the time it needs to conduct this investigation."