I believe so, if they're well-behaved. Be advised, there were peacocks on the grounds last time i was there which i know would make my dogs crazy.
Adam Hoffman's comments are spot-on.
No, there are no dogs allowed. The grounds frequently have chickens and peacocks walking around, so dogs would probably chase them. Also there are no dogs allowed in the Open Space Preserve associated with the winery.
Thanks! Your answer is awaiting moderation.