Fun date ideas in San Francisco?

I have just entered the world of internet dating and am starting to plan lots of dates. I don’t love dinner dates because they feel a little serious and I am prone to spilling things (bad luck!) so prefer to let someone like me before I spill wine on their pants. Have to wait till the 2nd or 3rd date for that!! Any ideas? I live in SF so SF ideas are best, but also East Bay (Berkeley/Oakland) is okay and Marin.