1. Equipment Inspection: All equipment should be checked and tested to ensure that it's in good working condition. Any issues should be addressed immediately to prevent any accidents from happening.

2. Staffing: Verify that all employees have undergone proper training and possess the necessary certifications to work in the trampoline park. During opening day, there should be enough staff to handle the expected number of visitors.

3. Safety Protocols: Confirm that new safety protocols have been implemented and communicated to staff and visitors alike. This includes posting visible signage and reminding everyone who enters the park about the rules and potential hazards.

4. Marketing: All ads and marketing materials should have been distributed to the public through various channels to attract as many visitors as possible. Review all marketing materials, such as flyers, social media posts, and emails, for any missed opportunities.

5. Stocking Up: Verify that there is enough stock for consumables like snacks, drinks, and other necessary items. Make sure to double-check that you have everything you need, so you won't run out at a crucial time.

By ticking off all the to-do items on your list, you will give visitors a safe and memorable experience during opening day. Be sure to double-check everything to make certain that you don't miss anything, to ensure a smooth and successful opening day.