Wait in the lobby for your friend to arrive.
Explore the neighboring stores and streets in the meantime.
Yell at the hotel clerk for not having it ready and go to the room. anyway.
Go out for a drink/food.
Go to the nearest bank and exchange for the right currency, and then go back to the store?
Get very stressed?
Call your friend because they have the right currency?
Go back to the hotel to set up a travel card?
Stay calm and use something to stop the flow of blood.
Stay in the same spot and ask your friend to go get help.
Scream for help and cry because it hurts.
No worries, I brought a travel first-aid. I will clean the wound and keep going.