Is there something you can do for the hearing impaired? subtitles somehow? head phone?

Yes, you need to contact guest services. "CC devices are available for movies that offer captions or descriptions. " from Harkins website, Under accessibility.

I've used both the headsets or the CC. Mostly works

Same

What Eddie said.

I seen a couple in front of me had a screen with the subtitles. I'm not sure what that's called

I don't know?? Maybe call or check in with mamagement??