Go whale watching or stargazing in New Zealand?

I have always been confused about whether to go to New Zealand for stargazing or whale watching, because I heard that both of them are must-try activities. But it seems that we can’t experience them all? I have seen a trip that allows you to check in for stargazing and whale watching. 11 days in total, 7 days in South Island + 2 days in North Island Then the route is Christchurch👉 Kaikoura whale watching👉 Christchurch👉 Tikapo stargazing at night👉 Mount Cook👉 Wanaka👉 Arrowtown👉 Queenstown👉 Auckland👉 The Hobbit👉 Rotorua👉 Geothermal Colorful Pools👉 Waitomo Glowworm Caves👉 Auckland Understand that: 🐳Whale watching in Kaikoura ✨Stargazing at Tekapo 🚁You can take a 25-minute Tasman Glacier helicopter ride in Mount Cook Staying in Queenstown for two days, I can try all the exciting skydiving activities, right? 🏨All hotels are four-star, stay in Kaikoura and Tekapo for one night, stay in Queenstown for 3 consecutive nights, and stay in Rotorua in the North Island for 2 nights Food options include: lobster meal, black gold abalone and oysters, salmon, Mount Cook snow mountain view buffet, beef and mutton hot pot, Green Dragon Tavern buffet, the world's coolest McDonald's, BBQ Overall, it's not a rush, and you can experience the attractions in a relaxed manner. I mainly asked about it. It seems that I don't have to get up early. I can be a little lazy and get up at 7 or 8 o'clock. Has anyone been to New Zealand? Can you help me see how this itinerary works?