I regularly do the First Saturdays devotion, and can confirm there are signal graces arising out of that that I can only describe as supernatural, a cult? I think rather not.. also, considering the difficulty I experienced in actually carrying it out, particularly the first time, tells me, I must have been doing something right, for nothing worth doing is ever easy. But the reward speaks for itself..

First Friday and Saturday are great, but what I am trying to say the amount of deception especially in the realm of apparitions and even approved apparitions
Mother Angelica very holy nun in my opinion was led astray with apparitions that others reported to have and error of interpretations of approved ones
The time of the great deception is upon us many are running around claiming many errors or false prophecies. Garabandal , Medjugorje, Father Gobbi etc
three days of darkness illumination of conscience distract many from real path of holiness.
St John of the Cross pray for us