Downtown Grapevine is very charming to walk around.
There's a nice wine bar called "Into the Glass" right next to a wine store called "Off the Vine" LOL!
Here's a link:
http://www.intotheglass.com/
I don't know if you're really from California, but the last Yelp review of Into the Glass was from a Cali transplant:
http://www.yelp.com/biz/into-the-glass-grapevine
"I recently moved from LA and was afraid I wouldn't be able to find any creative delicious food that was made with local farmers market produce, I am happy to report I was wrong!"