Yes, but it's not always easy. Most of the properties have now transitioned to a black box that is typically affixed to the back of the cabinet or actually affixed to the back of the TV itself. At Ocean Watch in Myrtle Beach I had to call engineering and they came and muscled the cabinet away from the wall.. "ahh there it is," I said. How was I ever supposed to know? At Surf Watch a few weeks ago, I could reach the box easily while standing beside the cabinet. The next week at Harbour Club the TV was in an alcove built into the wall. I had to stand on a chair and use the flashlight on my phone and crawl up on the cabinet to see and reach the box on the back of the TV.
Once you find the box, plug your HDMI cable (or Roku stick) into an empty port. On the TV remote hit the input button on the right side off all the buttons (sometimes you have to hit it a couple of times)... you will see "live tv" and HDMI 2, etc. Chances are you put your cable/stick into HDMI 2.
We've found we must take the Roku stick for ACC football/basketball games. For some strange reason, the ACC Network is not on the cable system at Ocean Watch. The ACC Network is on cable system at the Hilton Head properties. ACC Network is operated by ESPN, so we have to use the ESPN Roku app to see the games. When we use the Spectrum cable app on the Roku, the channel is blacked out because of geography (the systems know "where" you are plugged in) limits. So we must watch via the ESPN app. Note again, the cable / channel companies know if you are not on your normal network, so don't be surprised if they make you sign in again with your credentials (they do this to crack down on password sharing.
IMPORTANT-- because your HDMI cable or your streaming stick is probably hidden behind the TV or cabinet, it's easy to forget when you are checking out. I've gotten into the habit of always putting my roku stick/ remote and HDMI cable all in the same suitcase compartment-- and unzip that compartment and looking inside as the last thing I do before wheeling it out of my bedroom before checking out. That's my check and balance to make sure I'm not leaving it behind.
Also on the subject: In case you haven't noticed, most of the Marriott timeshares (not hotels) have several choices on the screen... live tv, internet channels, folio charges. Internet channels give you Netflix, HBO, Pandora and Youtube. You can sign in with your credentials and they say it will automatically remove your credentials upon checkout. For those who haven't paid attention, SHOWTIME is FREE-- no credentials are needed. I've suggested to NBC, that a free version of peacock be offered to Marriott systems as well.