Depends on what kind of safety. I've never felt unsafe or in danger here, but the ground is graveled and rocky, with small hills for the cars so that could cause some difficulties if they need to use a cane or walker. If you need to you could always drive up to the concessions to avoid most of that, however.
It felt very safe when we went. You really never need to exit your car unless you go to the concession but you can pull up near to that. The movie sound is on a radio frequency so you can listen on your car radio.
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