Perfect question for me, I grew up in Napa and got married there as well. We got married at Medowood Country Club in St. Helena and it was amazing. The wedding coordinator there is Lori Wickersham and she did a really great job setting things up for us and was very accomodating. They have plenty of units for your wedding party to stay in and they can accomodate a wedding of 150+. It is a bit pricey to have a wedding there, but if it fits within your budget, it's worth every cent. Here is their website:
http://www.meadowood.com/As for bringing Cowboy and Chester, I don't know whether they would allow that or not. We thought about having Drake in our wedding as the ring bearer, but we decided not to because we didn't want to have to worry about him plus it was August and over 100 degrees! I can't remember if we brought that up with Lori or not. I know that they do not allow people to walk their dogs on their property, but that doesn't mean that they wouldn't make an exception for a wedding. It never hurts to ask.
If your daughter is still looking for a wedding photographer, I highly suggest Richard Wood. Yes that's really his name, don't call him Dick. He used to be a fashion photographer and now he does weddings, he did a great job on our wedding and he's a really nice guy. He lives in American Canyon so he's close to Napa. I added some of his pictures of us below. Here's his website:
http://www.richardwoodphoto.com/index.htmlIf you wanted to check out other options, many wineries will host weddings, you'll just have to do your homework. I basically grew up at Meadowood and my Mom and Stepdad got married there as well, so we knew even before we had gotten engaged that we were going to get married there because of the special meaning of the place. But you might want to look at other options since you don't necessarily have that same connection. I'll look around a little for you and if I see anything, I'll let you know. Good luck, Napa is the best place in California to get married!