I'd recommend arriving 75-90 minutes before, if you're attending a screening near Times Square for a top-budget film, especially if you're sitting with someone else. You can check your smartphone inside the theater.
Wanted: World War Z screening tickets Tampa FL Tuesday June 18th. I have passes for an Orlando/Winter Park showing today at 1 PM (I can't make it because I'm working, if anyone wants these contact me ASAP). I also have passes for an Orange/Hollywood CA showing Tuesday at 7:30 PM, and a showing in NYC Tuesday at 7:00 PM. Please let me know if you are willing to trade for a Tampa pass. Thank you!