We've walked through CR and eaten at Poly during Thanksgiving week, I don't remember if the decorations were up, if so I didn't notice them at either one. So I can't really speak to that.
Like the pp, my choice would be the Poly. We've never stayed at the CR, but we love everything about the Poly. The CR has one perk over the Poly as it's within walking distance to MK, but the Poly is just 2 monorail stops away. It's also great being able to watch the fireworks from the Poly beach and having a short walk back to your room afterward without fighting the crowds out of MK. Good luck and happy planning .
Not sure if other resorts are an option, but our favorite during the holidays is the WL. I think all of the resorts are nicely decorated, but the WL has a cozy/homey feel as it has a fireplace in the center of the lobby that's surrounded by rocking chairs. The outdoor/woodsy atmosphere, along with all of the beautiful decorations, is very inviting the minute you walk into the lobby. With that said, I think you'll have a great time on matter where you stay, but the WL is our first choice that time of year.
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