The only time when BushBucks can be used in conjunction with another offer is with Diamond Partners.
For example:
Where a Diamond Partner Bush Lodge offers a 25% discount on any direct booking (Not through booking.com or any other OTA), we will match that discount in our Top-up to make it a full 50%.
The Member’s total spend on the stay portion must exceed the ADR to qualify for the Top-up.
For the purposes of BushBucks we define a stay as 2 nights for 2 adults as one unit.
Also see what is excluded here.