Steven's Trail is a 40min drive from the wedding venue and is our favorite hike in the area. Its a 9 mile round trip moderate hike featuring beautiful views of the valley and a waterfall/river at the end of the hike. Hike to the water and then come back the same way you came. Highly recommend.
Auburn State Recreation Area is 27min from the venue. It has lots of hikes of all levels and lots of swimming areas. Kid friendly.
Brewery and wine tasting room, highly recommended on yelp. 29min from the venue....on the way back to town. Just in case you are thirsty and want to continue the good times.