ORLANDO, Fla. — On a hot Saturday morning, prison reform advocates and state leaders rallied at Lake Eola Park to bring attention to the thousands of prisoners in Florida who are spending record-breaking summer temperatures without access to air conditioning. “What people want is simple: A country as great as its promise,” Maxwell Frost, a candidate for Florida’s 10th congressional district, said at the start of the rally. “No food, no visitations, no A/C. That’s not the promise of this country.” Rising temperatures spell hard times for prisoners. When the heat picks up in Florida, advocates a…