Need more info.
How hot was it outside?
How hot was the gondola prior to stopping?
Temp rose 1 degree while stopped, how long were they stopped?
What time of day was it?
Was the sun out or behind clouds?
How many people inside the gondola? Yes, it matters because body heat given off by 2 people is less than body heat given off by 10.
Only asking because, while your defense is 1 degree, making it sound like OH NOT AN ISSUE, that one degree COULD BE an issue for some people. And if it rose 1 degree in, say, a 4-5 minute stop, we could assume in 180 minutes the stopped gondola will warm up more than 1 degree.
Not trying to be argumentative here. I am one who believes these things aren't the death traps some are portraying, and I cannot wait to finally get the chance to ride one of these, hopefully in April.