Indoor shoes appropriate for use on a basketball court are required to play
(no outdoor soccer shoes or cleats)

While not required – they do make special shoes for indoor courts like:
https://www.nike.com/w?q=indoor%20court%20soccer%20shoes&vst=indoor%20cour
(the link is just for reference we don’t get a kickback…)

Shin guards are recommended but not required
(but you will wish you had them when you get kicked…)