How can we sneak into multiple movies without getting caught?

Me and my friends were thinking about going to the movies, and it's a chance we don't get very often since we have school and a lot of work. And I guess it's bad but we're being a little cheap. So what's a good method to watch multiple movies without getting caught going into different ones by being recognized? :/ And it's the Burbank 16 in California, knowing that might help I guess.