Translation:I am waiting at the entrance to the cinema.
Hi, you'd be correct for some people, and other people would say it with 'to'. And I'd probably say 'at the cinema entrance'.
I'd say that "I am waiting you at the cinema entrance" is also a valid translation
I think it's either "waiting for you" or the rather formal "awaiting you"... anyway, there's no "you" in this sentence. Sure, it's very probable, but you can be talking on your phone with your friend and telling them that you're still waiting for your date.