My daughter had her elbow slammed in the stateroom door with the verandah open (careful, the vacuum can be strong). Anyway, we overreacted, thought it was broken and went down right away. The assistant saw us in the waiting room, had her move her arm, wiggle fingers etc. we decided not to see an MD at that point. They have us ice packs, a sling, ace bandage and some tips to return if swelling, pain etc got worse.
No charge at all.
But it was good to know that they do have an X-ray in the ship if needed.
We happened to be just pulling up to port so we weren't sure if we would need to find land services quickly or if we could wait and see what happened and see the ship Dr if needed later.
They did tell us hours for later, so I'm not sure if we had requested the Dr right then if it would have been an emergency call since it was outside of their hours.