I feel the exact same way. We went to WDW in September and to Universal in November, and had a great time in both places despite the restrictions. But, we have been to theme parks dozens of times, and we knew what was canceled and what was open, so we knew what to expect. We didn't mind that there weren't fireworks or parades.
This would only be our second cruise, so I am more hesitant to go through with it with all the restrictions since I think I wouldn't be able to enjoy it as much. E.g. no shows, limited dining, limited or no port excursions would be a huge bummer.
If by some miracle this cruise isn't canceled, then I think we will still probably rebook anyways for a cruise in summer 2022.