I have put together a proposed list and order to take it all down.
Steps with the same number can be done at the same time. Cutting aluminum straps would be quicker and safer while multiple people are up on ladders at the same time. Drop the signs with ropes.
1 cut power and replace street light bulb
1.5 remove all controllers
2 remove laptop
2 cut quad copter power lines free from the netting
2 remove "nova", "maker shop", and "reston" signs by cutting aluminum straps
2 remove tree power at the base
3 remove tree base hoop
3 remove robot netting structure (cut aluminum straps)
3 remove package netting structure (cut ...)
4 remove quad copters
4 remove top of tree
5 remove aluminum straps and replace screws
5 pick up trash (cut wire ties, etc.)