Plan on a very full day of sightseeing in the park. In addition to these paid attractions, there are numerous free gardens you can stroll through (Rose Garden, Stow Lake, Shakespeare Garden, Palm Garden, National AIDS Memorial Grove, etc). - The Conservatory of Flowers you can do in 15-30 minutes. Although the tropical plants are beautiful, the space simply isn't very large. - You will need considerably more time to see everything in the Botanical Garden (up to 2 hours). It covers some 55 acres. Every single acre is packed with lovely scenery. The winding paths, ponds, and pavilions are designed for lingering. - Likewise, you will need at least a couple hours for the California Academy of Sciences. The planetarium show alone is a good half an hour. Then there are the animal feedings and short lectures (10-15 minutes each), as well as lots of exhibits on natural history to look at. - There are lots of nice restaurants and pubs near the 9th Avenue entrance to the park. Most of them are reasonably priced by San Francisco standards. And food quality is generally high. But for $8, you may have to go with pizza or gyros. The eateries continue along Irving Street in either direction. There are a few dining options in the park itself. But it is pretty limited. The California Academy of Sciences has the (expensive) Moss Room and a cafeteria. The De Young Museum has a cafeteria. The Japanese Tea Garden serves beverages and snacks. And there are the two "chalet" restaurants near the beach. With those, you are definitely paying for the view rather than the cuisine. http://themossroom.com/ http://deyoung.famsf.org/deyoung/visiting/de-young-cafe http://www.beachchalet.com/ http://parkchalet.com/