When Baba distributed the grapes, did everyone have the same experience as Boss Dharamsee?

No, the experience was unique to Boss Dharamsee, which is what makes the event so significant. Chapter 35 highlights that Baba's actions were tailored to the individual. While Dharamsee, the skeptic, was amazed to find the grapes in his mouth were seedless, the experience was different for others. The text notes that after his own miraculous experience, Dharamsee asked another devotee, Babasaheb Tarkhad, about the grapes he received. Tarkhad replied that his grapes did indeed have seeds. This contrast left Dharamsee 'extremely surprised' and confirmed that the miracle was a personal leela meant specifically for him, designed by Baba to address his internal state of doubt and 'knowing the intent of my mind.'