Please rent a car if you are an out of town guest. Ramona is in the north east area of San Diego County and a bit of a ways from everything. Plus you'll want to take advantage of seeing some of the sites while in America's Finest City. When we travel, we like to use Alamo, but there are plenty to chose from.
Also, if you don't use the directions card that was sent with your invitation, please please please use google maps. Other direction apps have been known to give the wrong turn by turn directions.
The San Vicente Resort is about a 10-15 minute drive to the wedding venue. Room rates are $120 a night and the group name is Civinskas/Peeples. There are 12 rooms on hold until August 26th. There is a restaurant, bar, golf course and spa at the resort and Barona casino is a short drive away.