In the story about the grapes, did everyone who was there experience the same miracle as Boss Dharamsee?

No, the miracle of the grapes was a personal experience specifically for Boss Dharamsee, which underscores its significance. The narrative in Chapter 35 makes it clear that while Sai Baba was distributing grapes to the entire group, the transformation from seeded to seedless happened only for Dharamsee. To confirm this, the text mentions that after his own amazing experience, Dharamsee asked another devotee, Tarkhad, who was also present. When Dharamsee inquired, "How were your grapes?", Tarkhad replied that his grapes did indeed have seeds. This confirmation, as stated in Chapter 35, left Dharamsee "extremely surprised" and highlighted that the miracle was a direct response to his personal skepticism and internal thoughts.