VA never used the 330 to Bali, unless it was as a recovery strategy, and even then I don't recall it happening. NAN is very occasionally used, although I can't recall the last...... VA did MEL DPS most of the year no seat blocking, in the initial startup there was certainly seat blocking, but in most cases the 737-800 will do it no probs, with alternate. we did accasionally use reclearance plans. I've certainly never flown a NAN with active seat blocking. The biggest issue for VA MEL-NAN is usually duty time. After you factor in Island Time in Fiji for the turnaround, less than optimum pax handling, it quite often required extension of duty. Dunno what QF's rules are, so don't know how that affects them. Haven't done NAN for a bit, think it is usually done with an overnight now.