Generate a full, in-depth guide on how to plan a successful product launch. The guide must be a detailed checklist broken down into three phases: 1. Pre-Launch: A checklist of tasks including market research, creating marketing materials, and building a waitlist. 2. Launch Day: An hour-by-hour checklist of communication tasks. 3. Post-Launch: A guide to gathering feedback, monitoring metrics, and maintaining momentum. Please include a supportive disclaimer.