I would guess at:
1) Rear view mirror not squarely fixed to windscreen (doesn't move but it is hanging off on one side of the mount);
Maybe
2) Rear view camera intermittently fails showing only black screen (ignition all the way off & on again usually sorts this);
Hopefully a loose wire, fixed when they do 4). But more likely to get a report of "couldn't reproduce!" 
3) Aircon blowing cold after longer period of driving (30-45 mins);
doubtful, unless its a loose connection on the pipe as identified by the "fag paper test" (copyright Pottsy 
)
4) Rattle in tailgate when opening/closing, like a loose screw;
should manage this one! Especially as it was probably them who dropped the loose clip when installing the camera...
5) Condensation in rear light housing;
fingers crossed for new light units sans hole 
6) A slight knock from front on reverse-turn.
might get new dampers or bump stops...
good luck!
and hope they don't do 7)