Hello,
You could start the early morning off with breakfast at Searss restaurant (Not the department store); have the pancakes, on Powell Street. After breakfast take the Powell street cable car to the end of the line. Walk towards the Bay and you will find the Dolphin swim and rowing club. Look to your left and there is a small beach where you can watch swimmers enjoy 52 degree water and a nice view of the wharfs west end. If its a nice clam day go early and purchase a ticket to Alcatraz and enjoy the island. They have a pay phone on the island, and call a relative and tell them your visiting Al Capones cell at Alcatraz Prison. Take a camera plenty of photos opportunities. Once you get back, go to pier 39 and visit the sea lions and check out the shops, yes there is a knife shop. Lunch, at the Buena Vista Café, home of the Irish coffee, get there before 11:30. Its back where you got off of the cable car, on the corner. If you cant eat there, pier 39 has the Eagles Nest. But I would do the BV. After lunch, take a taxi to Coit Tower. Ask if they have the tour to climb up the stairs might be much but the mural is a true S.F. classic. The way I remember S.F in the 60s and 70s. Other wise there is an elevator. After that you might want to head to pier 7. Which jets out into the bay and offer you a view of the Bay Bridge, Treasure Island and the East Bay. There are benches there for you to rest and enjoy the view. Catch a rickshaw taxi and tell them you want to get the California street cable car, at the Embarcadero. Once there you can take the cable car to the top of Nob Hill, where the railroad barons of the west once visited. The Mark Hopkins Hotel has a bar call the Top of the Mark. If its open, go up there and enjoy a drink soda or other. It wont be cheap. But the view is a +10. Look at the large flag, I once knew a build engineer who was told to take that flag down. Do to high wind. He tried and the flag took him out over the build and he was looking at a long fall. Luck for him, the wind died down and he let go and fell to the cat walk.
You can walk down to Chinatown on California Street, not to shop but get a rickshaw taxi to give you a tour of the district. There are many restaurants there and if you want to have a classic noodle dinner. Go to Sam Wus. You will not be impressed with the look of the building. But the food is cheap, tasty and interesting as you walk through the kitchen to go upstairs to eat. You still have energy, take a taxi and go see a movie at the Metron Theater.