There were never any dietary restrictions involved with the $oka Gakkai Cult Org.. In fact, on tozans (pilgrimages to the motherland head temple before the priesthood split), you were kept pretty well fed (buffet breakfasts, luxurious obento lunch-boxes, and dinner was usually back again at the hotel, which again, was pretty plush.
They controlled everything else while on Tozan, but not you
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Former Cult Members and Affected Families