Ethanol free fuel and additives

A local gas station now carries ethanol free fuel, rec91, has no additives. I usually only need to fill one tank yearly for my older cars. Any opinions about adding stabil or Techron like products?

I added royal purple max boost since it marginally boosts octane, has injector cleaner and fuel stabilizer. Don’t know if using it for every tankful going forward will be have negative effects…