Use year does not determine when you can go (any time of year), or when you can call or go online to make a reservation (always up to 11 months out from date of arrival for home resort and 7 months out for others). Use year instead detemines which year's points get used for a reservation. Via example with a June use year and you want to go for a trip beginning August 10, 2018: ((a) to make that ressie, you can go online or call as early as Sep 10, 2017 for home resort or January 10, 2018 for another resort; (b) at the time you call, you can use for the reservation your June 2018 points which will be your "current" use year points for that trip, any already banked June 2017 points, and, if needed, any June 2019 points which you borrow at time of making the reservation.