I knew a guy who worked in Finance. Whenever he would buy alcohol, or cannabis (legal where I lived) he would only pay cash. His concern was that, if his credit card usage data were sold, it could increase his premiums.
Itemized receipt data is not transmitted to the network or to the issuing bank.
Some merchants have multiple registers for the sale of different types of products, but generally if you receive only one receipt for your full purchase, it will be recorded under the category code for the merchant's primary business.
On my American Express credit card statement, all the airline flights show the details of the flight and Staples.com transactions show the specific items that were purchased. And this has appeared for at least 6 to 8 years.
In Canada, at least, you have to go to specific stores that only sell either alcohol, or cannabis. So the just having a bill from there would be enough.