I don't disagree, but grocery stores are necessities, Disney isn't. That being said, I have long fallen on the slower side of reopenings and contact. I have no interest in taking my family to Disney, or a movie theater, but will happily go to a grocery store in a mask or spend a full day hiking in parks without one. We've reached a point where there is significant anecdotal evidence, and yes, it's non-scientific, that theme parks and other activities can be open with common-sense precautions like masks and social distancing. California, in my opinion, has reached the obstinately stupid extreme. They are cutting their own nose off to spite their face.
We are not in danger of over-running our healthcare system, treatment has gotten significantly better, survival rates are significantly better than they were in the Spring, and general knowledge of the disease and how to mitigate spread is pretty good. If people are willing to buy in to the precautions, or companies are willing to enforce precautions on customers, it's pretty clear theme parks can open.
When people are obstinate or stupid, or when rules aren't enforced, then we have super spreader events. A great example was Sturgis this year.
So a little personal responsibility, a little corporate responsibility, and California can stop being idiotic.