guess you don’t drive the thru way, many vendors are closed various hours. I was just at some of those rest stops ( the ones not closed for renovations ) 2 months ago and only 1-2 vendors open inside, more were not operating and this was during morning traffic heading north on week day. same for late afternoon traffic heading south on a week day.
I drove the at least twice weekly over ten years. Mostly ate at Roy Rogers. I’ve very familiar with them, mostly on I-87 going from Malone via Plattsburg then to/from New York City or Springfield, Massachusetts.