Mexico is open for tourist business and Puerto Vallarta is only a 3 hrs. 45 min. non-stop flight from SFO:

Walk the Malecon

Pedestrian friendly oceanside walkway with sculptures, restaurants, sand art, and the Dance of the Flyers. Five performers atop a 98 ft. pole where 4 will tie ropes to their ankles and slowly drop to the ground while spinning around the pole.
Explore the Romantic Zone Start at the cathedral and main plaza and walk across the street to the public stage and arena area where you may see a magic show or some other street performance. Take a Taco Tour With Vallarta Food Tours, https://vallartafoodtours.com/ follow your guide through the streets of the city center and catch the bus across town (an adventure in itself), not only will you taste the city’s best tacos, you’ll also experience a range of Mexican flavors that are sure to inspire your taste buds from the classic al pastor tacos to the smoked marlin.

Take a Cooking Class

Miriam’s Mexican Kitchen http://www.miriamsmexicankitchen.com/ will show you how to bring those flavors home with you. There are many different cooking classes to whet your curiosity, for every skill level to the more experimental menus available.

Whale Watching

Puerto Vallarta Bay is a very popular vacation spot for humpback whales. During the winter, humpback whales migrate south to the warm waters off the coast to raise their young. This means visitors have plenty of opportunities to spot them flipping and splashing around, particularly between February and April.

Take a Day Trip

Visit San Sebastian del Oeste, the Marietas Islands, Playa Escondida (Hidden Beach), or a local bus to Sayulita 20 miles north. Vallarta Adventures is one of the tour companies offering tours. https://www.vallarta-adventures.com/en/