I've heard differently in that it's not the venue's responsibility, but the people/organization using the venue. Such as my kids' high schools needed to provide my assertive listening device and interpreters for their graduations at the university's field house.
It would be nice if the venue offered the services...for a fee to the organizations to offset their costs because then they would already have the equipment and/or source for interpreters and the "little guy" wouldn't have to expend the money or time to find out how & where to get them.
