Yesterday went to Starbucks with a friend. After paying for our drinks and noticed my Starbucks card balance is on the low side. Decided it was a good time to increase the balance. Everything went smoothly until she started to make the change. Apparently she was short on bills so she proceeded to give me $25 in coins. She reluctantly went to another drawer and counted some bills after a brief and mild complaint from me.
I wouldn't say this was unpleasant but the point is a bit of common sense and consideration for the customer is in order.