Ive replaced the fuel , and oil, spark plugs and fuel , air and oil filters, and battery, in cars that sat un-touched for 3-5 years and they started up and ran , that doesn,t mean they were not damaged by corrosion by sitting for years, with moisture collecting in the engine.
I try to start and let my corvette engine run and get up to operational temp at least once a month and preferably once a week, as it helps lube seals and helps keep the battery charged and moisture out of the oil, but keep in mind in florida theres high humidity 99% of the time and temps rarely drop below 75F and in a closed shop, and temps in the closed shop can easily exceed 100F at mid day.
if your humidity levels are lower once every two weeks to once a month should be fine as long as the battery stays charged