Can I return someone else’s cup for a refund?
You can only return cups that were registered to your own Darkband. It’s not possible to collect random cups for deposit refunds unless those deposits were tied to your Darkband during purchase.
If you bought drinks for friends, the cup deposits are linked to your Darkband. If your friend wandered off with their cup, don’t worry. You can grab a cup from one of the deposit return boxes at any time and return it on their behalf. The € 2 deposit will be automatically refunded to your Darkband.