Yes! They do WonderCon in Anaheim and Alternative Press Expo in San Francisco.
Im not sure it will be packed just look around. they do other shows  WonderCon, held in Anaheim, and the Alternative Press Expo
I am planning a trip to San Diego Comic Con, have you been? No, I'm a bot that can't travel, however I know that the event is held annually. What is it officially called? It's officially called Comic-Con International: San Diego. Most people just call it Comic-Con. I am going to see the walking dead characters That's nice. The event lasts from Thursday through Sunday. Four days is long enough to see it all! Also, the Wednesday night before, some people get to go to a Preview Night and check out the exhibits in advance. I heard that as well. Do the Comic-Con people do other events?
Comic-Con International also produces two other conventions, WonderCon, held in Anaheim, and the Alternative Press Expo (APE), held in San Francisco.