My advice is TAKE YOUR OWN EQUIPMENT.
Don't rely on them to supply it, because it may not sound good, it may not work properly, or you may not understand how to set it properly.
You will be performing for all those people, many or most of whom have not heard you before. Each of them is a propective employer for future jobs. Sound your best at all times!
You can ask them to provide something, and use if if you want, but I would have a back up in the truck!
DonM