Flight
The venue is situated about halfway between each airport, so you can choose either to fly in to. Sacramento tends to be a more calm airport, and despite being further away, is a shorter drive most of the time. San Francisco can be cheaper, but Bay Area traffic is a nightmare most days. Oakland airport is the closest, but it's Oakland.
Hotel
If booking over the phone, please mention VICTORIA AND IVAN'S WEDDING BLOCK. Otherwise, you can use the website to book online with the locked-in rate. Double Queen rooms are $149.99, and Double Kings are $169.99.