Turin,
You are so right. Have spent many a night out there.
At a Boeing conference on the still in design B757, the subject of small damage repair to composites came up. Boeing had indeed produced a procedure to handle that. Only air temp had to be above 75-deg F.
I raised hand and asked what I do at Bradley, Connecticut, temp 23-deg F, freezing rain coming down, small ding in a trialing edge of a flap (baggage cart strike), No real structural problem, so could I speed tape it?
Horror and consternation. NO! Moisture intrusions, etc. Put it in hangar and repair properly.
"Then we have to wait for spring. No hangar there." (P&W do have one, but it is not available).
Lots of our procedures were written under a palm tree or in nice, warm offices. And yes, I have been at Bradley in freezing rain conditions.