I'm sure the person that worked there would know you can always call them too I never go there on the holidays. There's a military installation nearby and also a toll collector there's a fee to get in the Beach area so I'm not sure you can't get in unless you go through those secure toll booths maybe there's a number to call for Monroe County beaches
Ft Zach should be open. I was park ranger ops there and we were always open till sunset
Fort Zachary Taylor is open 365 days a year. Opening at 8 am and closing at sunset, which means closing times vary through out the year.
No idea im sure the website will in form you
Call the park for information
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