Done

I tried all kinds of crazy things with the wiring in the railway hub. I tried having a separate button for each destination but that there were timing issues with the track changes. I built an elaborate system to slow the circuit down and it looked like this:

Anyway, it didn't work. In the end I decided on switches instead of buttons. It's not an elegant solution by any stretch. Two of the three destinations require both switches to be in a particular position.. and sometimes I accidentally hit one of the switches on my way out of the station. As a result I may move the button to the far left with the switches on the right but this is how it looks now:

And that's that. Now I have speedy travel between my:

Spawn Point

Beach House

Hilltop Fort

Floating Island

Castle Pit

For the most part I can travel anywhere at night and gather supplies from anywhere they might be. There are only a couple of dangerous areas where monsters and animals can get too close to the track. I guess more fences come next.