We interviewed with 15 professional event planners, including 10 musical event planners and 5 corporate/ social event planners, to further validate our initial hypothesis and to investigate their pain points. The interviews uncovers a fact that event planners productivity decrease first because of the fragmented tools: using multiple tools for different tasks can lead to inefficiency and data silos. Second because of the learning curve: complex tools may have a steep learning curve, impacting productivity and potentially leading to errors during crucial phases of event planning