first of all, how dare you take a 2-year old to a movie ?
do u think about the annoyance for other people, if the kids starts screaming. We people never undrstands others problems and see our cultural functions. You can see at least one child screaming and yelling always

in case you dnot want to pay for the ticket, then kid should not occupiy a seat. He will sit in the parents lap till the movie ends. Your question did not specify , whether your kid wanted to occoupy a seat