As far as the ceremony goes, both of the Calabrese brothers confirmed it - Frank on tape and Nick in court testimony. While there are some documents before their info came out that talk about a ceremony in Chicago, it seems the conventional wisdom for years was that the Outfit didn't use it. And the lack of evidence of a ceremony, including anyone talking about it on bugs, seems to support this. Its why some have speculated the ceremony started being used at some point in the 1970s and went at least to the late 1980s or even later.

As for drugs, enough guys had involvement in it to suggest "no involvement" wasn't an iron clad rule across the board. But, in comparison to NY for example, involvement was certainly much more restricted. Even in the post-Accardor Outfit, they have had relatively little involvement in drugs.