Monterey
While Madeline, Celeste, Jane, and the crew are generally stuck doing school pickup and dropoff, you can take in many of the activities that their breathtaking hometown has to offer, like a helicopter ride to a tasting at local winery Heller Estate, or a sailing excursion (where you can see whales, dolphins, or sea otters). Or if you're the more adventurous couple, you can surf and take a guided biking tour, all of which can be booked through National Parks Revealed, a local destination management company that creates luxury bespoke travel experiences throughout the country's national parks, as well as throughout California.
For sightseeing, make sure you stroll around Cannery Row, one-time center of the sardine-packing industry, that's now covered with gift shops, seafood restaurants, and bars in converted factories. There's also the famous Monterey Bay Aquarium and Fisherman's Wharf, with more shops and restaurants that are identical to the places the ladies lunch at on the show, and Lovers Point Park and Beach—obviously a must-see spot perfect for honeymoon photos (look out for the beautiful purple ice plants and other wildflowers which grow on the rocky coastline).
As for where to stay, the most desirable choice for newlyweds is the Monterey Plaza Hotel & Spa. The views, the crashing surf, and the most incredible palatial suites…ideal for spending a few days alone together. There's also Sanctuary Vacation Rentals if you want to go the cozy home rental route.