The 13th annual Portland Fresh Hops Fest, a celebration of the annual hop harvest, will take place at Oaks Amusement Park on Friday, Sept. 30 from 5pm to 9pm and Saturday, Oct. 1 from Noon to 8pm. Minors are not allowed on Friday, but are permitted on Saturday until 5pm (Oaks Amusement Park rides will be open from 12pm to …