Thank you fro the fantastic day planners

I know my kids (and husband) want to hit mini golf, so we are planning on the one in SAB - Fiesta Falls. Maybe we will do that after checking in and then hit the Lighthouse and then dinner
Our plan was a full day in town - getting there early. It's $12 to park all day, so might as well get our moneys worth! All those places you listed - Castillo, Fountain of Youth, St Geo Street - are they are within walking distance of each other. It looks like it on a map, but I don't know if it is for real
I am going to look up the Eco Tours right now!
Thank you, all, for the great info!
Fiesta Falls is fun! And, at the very top of the course, there is a view of the ocean. Our kids also really like the ice cream shop Coneheads which is close to Fiesta Falls!
Fiesta Falls also open in the evening, so, if you get there later than planned, it might be something you could do after dinner as well.
(There is also a WONDERFUL ghost tour of the Lighthouse, if you like that sort of thing. You still get all the history of the lighthouse & can tour all the buildings - but you get ghost stories (based on the actual historical stories) to go w/ the tour.)
Yes, all those places are within walking distance. However, the Fountain of Youth will be your farthest walk. It's going to be closest to the parking garage - but still a fairly decent walk. Honestly, we've always driven to the Fountain of Youth, but, every time we go, it seems like we have younger kids w/ us - the last time we went, our younger DS was about 2. (It's been a while since we've been, so we were thinking about going back ourselves in December.)
There is a beautiful street near the Fountain of Youth... the Live Oaks w/ their dripping Spanish Moss form a canopy over the street. Hurricane Irma did some damage to the trees, but the beauty is still there. (And you'll probably notice little signs of Hurricane Irma here & there as well... many of the citizens were still recovering from Hurricane Matthew when Irma hit. The town is very low-lying, so, in both hurricanes, they received a lot of water damage. Additionally, Matthew spawned 3 different tornadoes in the area. The Huguenot Cemetery, which is next to the Visitor's Welcome Center & you'll see as you exit the parking garage, is very, very old, & it sadly received lots of tree damage. Several of the old gravestones crumbled. We were there the week after Irma in September, & town officials were discussing how to best clean up the cemetery. The fallen trees should be gone now, but you'll probably still notice the damage.)
Castillo, St. George Street, & anything else in the historic district are all within walking distance of each other. You will do a lot of walking though!
There is a Marina located on the bayfront in the historic district. There are different boat tours that you can schedule. During the holiday season, all of the boat tour companies will have a night-time tour so people can see the town from the bay all lit up. The
Freedom Schooner is a popular one - the ship is gorgeous & very pirate-y/vintage-y looking. However, we really like the Eco Tours. It's a smaller company, & the boat launches are smaller - normally 5-7 people per tour. The tour guides are very knowledgeable of all the different animal & plant species in the bay - especially the dolphins.
Oh, & if you like coffee, Kookaburra is a great little coffee shop - there is one in town & one on the beach. They are locally owned, & they've just started roasting their own coffee beans. And, in town, the Hyppo popsicles are great - they're all natural & have interesting flavor combinations like Peach Bourbon or Strawberry Basil Champagne. There is also a Dole Whip stand on St. George Street that serves Dole Whip Floats just like the ones in Disney.