Nice-Monaco in December?

Okay, thanks to the members of this board, we decided to book six nights in Paris in December. Very excited.

Starwood is having a promotion now and it looks like I will have some free nights to burn in my quest to maintain my Platinum status. I was wondering if it made sense to go to Nice first and either stay there or in Monaco. Is there anything to do there at that time of year? If so, how many nights? Any nice day trips from there?

As always, appreciate any feedback from the generous people who frequent this thread. Many thanks!
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