Your dream is rich with symbolism and emotions, and it can be interpreted in several ways. Here are some insights into the various elements of your dream:

1. Crowded Stadium: A stadium often represents a place of competition, public attention, or social gatherings. It might indicate feelings of being observed or judged in your waking life, or perhaps a desire to connect with others.
2. Summoning and Physical Touch: Your friend sending someone to summon you and the act of having your legs rubbed could symbolize a need for connection or intimacy. It may reflect your relationship with Jean and your awareness of her needing support.
3. Jean's Condition: Jean not feeling well could symbolize your concerns for her or perhaps reflect your own feelings of vulnerability or worry in a current situation. The mention of her daughter being pregnant might suggest themes of growth, new beginnings, or the nurturing of ideas or projects in your life.
4. Transition to the Grandstand: Moving to a more comfortable, sheltered area could symbolize a desire for safety, comfort, or a better perspective in your life. The grandstand being closer to the stage might suggest you are seeking a more active role in your life or wanting to be more involved in significant events.
5. Harry Potter Show and Attention: The pop-up show and the girl on the broom could signify your desire for magic, adventure, or escape from reality. Being singled out in front of a massive crowd can indicate feelings of pressure or anxiety, but it may also highlight your potential for leadership or being in the spotlight.
6. Black Feather: The black feather can hold various meanings; it may represent wisdom, change, or a connection to the spiritual realm. Keeping it suggests you are open to receiving new insights or guidance, even if they come unexpectedly.

Overall, your dream may reflect your current emotional landscape, concerns for those close to you, and your wish to navigate challenges with grace. It could be beneficial to consider what aspects of your life feel overwhelming or what new beginnings you might be anticipating. Embrace the messages you received from your dream, as they may guide you in your waking life.