I used to say to people when it came to marathons "why run when you can drive"
First let me say the Cast Away Cay 5K is the only race I have ever done. I enjoyed doing it because it was semi organized.
You met at the Walt Disney Theater as a group, then everyone walked to the start line and got a numbed bib, then everyone started as a group with a start time clock at the start/finish line.
There were people like my wife and I that did it as a walk and there were people that did it like a regular 5k, it was nice.
Disney had cast members throughout the course cheering you on and they had a water stations on the runway and on the loop.
My big thing was to be able to do the race then get back to the ship to have a doughnut from Cabanas with breakfast.
On our last cruise November 2022 you got off the ship on your own, found your way to the starting line and started. At that time there were only cast members at the start/finish line not sure if it has changed to having at least someone out on the course.
It is still a nice way to start the day at Cast Away Cay, enjoy and have fun.