Free: Contests & Raffles.
I wouldn't say kickoff, probably decent berries still particularly with this being a later year. Depends on where though. Some years "my" berries at 6500+ are all dried up by Sept 1
There is a number crop of service berries this year. They are ripe now and will be a great early august food source. Only bad thing is they are everywhere so bears don’t have to congregate in any specific area.