My sister and BIL MIGHT come with us but can only afford to stay further away ($50/night rooms near Knotts). They'll have to park their truck, I'm thinking the parking structure is really the only way to go, right? Are there any parking discounts?
There's an ART route that goes to Knott's and Medieval Times. There's also Google public transportation search to see if there's an OCTA route that works for them.