I bought some yesterday (several in each transaction) and did not receive the Catalinas. I think the printer was just off/out of paper. Be cautious of that.

I was able to use multiple (>5) catalinas in one transaction yesterday. The first scans fine. The subsequent catalinas require cashier to approve on screen. This was after a manager told me the rules were 1 coupon per transaction per day. I guess it isn't hard coded. YMMV.