Technically yes, however there is no ramp. You have the parking area and lawn with a slight grade to push up. As long as you are able, then yes it is accessible. While you do not need to be a gym rat to do this, older people may need assistance as it is not a smooth platform.
There is an area of tables and chairs on the lawn when you first walk up. You have to walk up steps to get into the winery and I did not notice a ramp there.
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