Yes you can watch AARP Movies For Grownups on your TV with your Roku, Firestick or other devices:
First click here ---> Back to All Movies for Grownups Screenings | AARP Movies for Grownups Screenings
On new page/ tab - sign in at top right --> Login
Click on ---> Frequently Asked Questions -- you will see instructions for Roku and other devices and other information. They will send you a six digit code to install the ' Roku or Firestick - Eventive app/ channel ' in real time to your Roku or Firestick 'connected TV' - you are in!
If you register to see a movie - AARP/ Eventive will send you an email acknowledging/ confirming your registration.
On the day of event they will send you an email/ reminder. Follow instructions. They may ask you to do a ' Device Compatibility Test ' and/ or a ' Six Digit Code ' from an email / PC to your Roku or Firestick connected TV - do it
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In addition there is AARP Theater Shows
Click here ----> Back to All AARP Theater Shows | AARP Theater
😎 Personal Note: I got interested in AARP Movies for Grownups after having seen the 'Indiana Jones - Raiders of the Lost Ark' on my TV thru my Roku - in full HD quality a while back. Recently there was 'Back to the Future' , 'Pretty Woman.' Read the FAQS and fine print and all should work out for you. It can be done.