The Fool is a card that suggests taking a more open and exploratory approach to situations. It indicates that the subject in question should make the most of the situation and not be too restrictive with their expectations, leaving room for the unpredictability of fate. The ideal in this case would be to participate in the event with the intention of making new acquaintances, expanding one's professional networks and creating new opportunities.
The Hanged Man represents an attitude of faith in the universe and its possibilities. This card requires that we let ourselves go with the flow of life and not try to control it too much. In this case, it means that the subject in question should attend the event without expecting too much from it. He should look at this occasion as an opportunity to expand his professional networks and not as an opportunity to meet someone particularly important.
In conclusion, the answer to the question is yes. The subject in question should participate in the event with an open and exploratory attitude, making the most of the opportunity that presents itself without expecting too much from it. If he stays open to possibilities then there's a good chance he'll meet someone important to his career.