Yes, they are open during Christmas as we go every year. You can find the answers to your questions about distance in Google maps.
I-95 @ rte 16 is about 6 miles from St Augustine, and about a 35 min drive south of Jacksonville (around 50 miles noth of Daytona)
Yes, they're open. Not far from Jacksonville.
They're worth the drive!
Thanks! Your answer is awaiting moderation.