Thorsborne on the sly

Bit of an odd and cheeky question here, but hopefully someone who knows a lot about the Thorsborne Trail/Hinchinbrook can assist.
My partner and I foolishly booked flights to Cairns (from Melb) to do the Thorsborne Trail, without first booking the hike. Turns out the hike books out 9 months in advance and there is no availability at all. However, there is availability at numerous campsites along the route that are not official Thorsborne hiker campsites. We're wondering if we can, for example, book to camp at Banksia Bay, South Zoe Bay, Mulligan Bay and walk the track regardless? A bit cheeky but the camping would still be spread out as intended by the authorities, and there wouldn't necessarily be more traffic on the track (as boat campers at those sites could go for day-walks on the track anyway). Or maybe someone checks bookings and it would all backfire spectacularly?!
We're hoping that there will be cancellations and we'll be able to book to do it conventionally, but wondering about booking the other sites in the meantime as a back up plan.
The possible follow up question might be about alternative multi-day walks in North QLD but I'll leave that for the time being...
Thanks!
My partner and I foolishly booked flights to Cairns (from Melb) to do the Thorsborne Trail, without first booking the hike. Turns out the hike books out 9 months in advance and there is no availability at all. However, there is availability at numerous campsites along the route that are not official Thorsborne hiker campsites. We're wondering if we can, for example, book to camp at Banksia Bay, South Zoe Bay, Mulligan Bay and walk the track regardless? A bit cheeky but the camping would still be spread out as intended by the authorities, and there wouldn't necessarily be more traffic on the track (as boat campers at those sites could go for day-walks on the track anyway). Or maybe someone checks bookings and it would all backfire spectacularly?!
We're hoping that there will be cancellations and we'll be able to book to do it conventionally, but wondering about booking the other sites in the meantime as a back up plan.
The possible follow up question might be about alternative multi-day walks in North QLD but I'll leave that for the time being...
Thanks!