Even off duty, legal issues need to be considered
There may be no expectations that you are there at an event to provide services, but it could be a case of serendipity…you were there as a spectator and something happens that requires medical assistance.
Many practitioners with children will easily identify with a situation where they go along to watch their child play sport and one of the participants is injured and all eyes turn toward the doctor. Often the doctor is the only trained person present.
This unintentional involvement is of course unpreventable and not dissimilar to other Good Samaritan incidents.
The same principles and duty