Saturday night stays cannot be booked with a Great State Voucher, unless they are booked as part of a multi-night stay (eg Friday and Saturday is booked together, OR Saturday and Sunday. The voucher discount will then be applied to the Friday night or Sunday night stay).
Data shows that Saturday nights are still strong without stimulus. For example, during Great State Voucher round four, Adelaide hotel occupancy say a high of 56% on Saturday 21 August without vouchers, compared to Friday 20 August at 55% which was stimulated with voucher bookings.
It continues to be mid-week, particularly Sunday to Thursday nights when the stimulus is most needed.