I always thought the “limited hours” was unusual for that site.This is now listed as open 24/7 on the Tesla website but Supercharge.info says "Limited Hours"? @BlueShift
it is not in a controlled, or pay parking lot. And I saw no signs indicating limited hours, although I wasn’t looking terribly closely.
The other superchargers located at Hy-Vee stores do not have any limited hours to my knowledge.