Just got my morning coffee from 7/11 with by keepcup and was told by the attendant that next month all coffees with a reusable cup will be free. So a whole month of free coffees if you use a reusable cup.
He didn't mention anything about it being only linked to their branded rCups, and I wasn't using one today, so doesn't look like that's the case.
But maybe someone associated with the store can confirm.
Offer available only to customers filling their own reusable coffee cup made of multi-use plastic or glass and suitable for hot liquids. Make sure your reusable coffee cup is clean. Not in conjunction with any other offer. Valid to 02/09/19.