How can I make a move on a woman on a movie date?

If there aren't that many people there, should I just try to kiss her in the theater? I haven't had a good opportunity to try this. We were going to go to a carnival, so I would've tried on the ferris wheel, but the carnival got rained out when we were going to go, so that's out.
How can I make a move on a woman on a movie date?
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