We will be in Monterey for 2 nights before heading up to Santa Cruz for a night and then heading home (already spending 3 nights in SF, 1 night Sonoma, 3 nights Yosemite before heading to Monterey). This will be at the end of our 10 day vacation. We have 2 teenagers, 13 & 17. Do you think we would enjoy Hearst Castle? Do you have to take a tour or can you pay a fee and just walk the grounds (gardens and pool?). I am not sure my kids will enjoy it and it seems very expensive. We live in SC and have been to the Biltmore Estate, the kids weren't overly impressed. Wondering if it is worth the drive down, or if we are better off exploring the gorgeous areas between Monterey and Big Sur?