USA Weekend has an article titled "The Best of Summer" and it includes the "10 Best Reasons to Go to Comic-Con." Directly under the title, it says "Comi-Con [sic] is July 24-27 in San Diego." We'll ignore the lack of proofreading along with the fact that there are plenty more comic book conventions around the country.
Among their reasons to attend are the chance to see movie trailers and TV pilots as well as buy exclusive collectibles featuring Star Wars and My Little Pony. Also, you can wear whatever you want (including your homemade superhero costume) and take Instagram-postable pictures of others in costumes. They advise that it is generally okay to say hello to any celebrities you come across, either on the convention floor or at the hotel bar and that even if you don't have tickets to the actual con, there are free events and nightly parties that you can attend. (That last one is important because, if you don't already have tickets, you aren't getting in; they have been sold out for months.)
Oh, and in case you were wondering, "Frame-worthy art awaits. Pack a sketchbook and visit Artists' Alley, where many folks are happy to draw whatever your heart desires." Hmm, seems to me that most, if not all, of those "many folks" are comic book artists. And comic books are what give Comic-Con its raison d'etre. Or, at least, they did once upon a time.
These days you would never know. You might think Comic-Con got its name because Don Rickles, Jerry Seinfeld and Joan Rivers used to hang out there. Trying out their new nightclub routines, showing trailers of their new movies and sneak peeks at their TV shows.