Python reticulatus is a semi arboreal snake. Not to mention active, intelligent (for a snake) and inquisitive. In all my years of (in)experience, I have noticed them to have a preference for resting above ground curled in branches very similar to GTPs.
Now, I hate bins for any species of animal, but that is just me. Being a keeper of the larger reptiles, I prefer large enclosures that give my animals options. In a bin a snake cannot explore, climb, swim or hide. I also don't like having to disturb (pull the bin out) in order to observe my animals.
Sorry for the late reply - I haven't checked in here for awhile.
And again, your retics are gorgeous.
Chris