If its opened then I am not sure about the weather...never been to florida in december so I don't know how it gets there. I will say though my kids LOVE MBYBBQ! We went for the first time to it last year and they had so much fun they are asking to go back again on our next trip. Like I said it was a ton of fun, but it is sort of outside, I mean you are in a covered arena sort of but the windows are huge and if its cold I can see it being cold in there. If you are wondering about the weather and unsure of it then I would go with Chef Mickey's, chef mickeys is fun too and the kids like the environment that it is in...I would probably choose Chef Mickey's over MBYBBQ only because I wouldn't be sure how the weather was going to be in December