The bones of this itinerary are excellent: land in SF, base in Sausalito at Casa Madrona, ferry into the city, bike the Golden Gate Bridge, then meander south through Muir Woods, Carmel, Big Sur, and cap it all off with a spa retreat. Eight days, no rushing, gorgeous scenery at every turn.

But let's talk about the details, because the details are where your budget either works for you or bleeds out quietly.

The Muir Woods Question. Here's the thing most visitors don't realize: you need a parking reservation or shuttle booking just to get in. Show up without one and you're burning daylight in a pullout wondering where it all went wrong. More importantly, if your goal is towering redwoods and not specifically Muir Woods' Instagram clout, consider Henry Cowell Redwoods State Park instead. It's directly on the route to Carmel, significantly less crowded, and — this is key — free of reservation hassles. One Bay Area local put it perfectly: Henry Cowell is "more enjoyable due to the reduced crowds" and eliminates the backtracking that Muir Woods requires on Day 2.

Another smart suggestion we've heard: after Muir Woods (if you do go), drive up to the top of Mt. Tamalpais. As one local noted, it's "about a 25-minute drive and the best 360 views in the Bay Area." Hard to argue with that.

The SF Logistics. Walking the Golden Gate Bridge instead of biking it is actually the move if you're not a regular cyclist. You'll soak in more views and stress less about the surprisingly aggressive bike traffic. And a word of gospel truth for anyone visiting: do not leave luggage in your car. Not in Sausalito, not in SF, not anywhere. Car break-ins remain the Bay Area's most reliable public service.

Big Sur and Beyond. Glen Oaks Lodge is an outstanding pick — book it yesterday, because it fills up fast. Hit McWay Falls before 10 a.m. unless you enjoy experiencing natural beauty through a wall of other people's iPhones. Dinner at Nepenthe is a classic for a reason.

The spa finish — Bernardus Lodge or Carmel Valley Ranch — is the kind of smart luxury spending we can get behind. You've done the hiking, the driving, the exploring. Earn that spa day. This trip respects both your time and your wallet (well, mostly your time — this is California, after all). Happy 40th.