I worked as a commis chef over the summer period. 9 hour shifts with no proper breaks in a 37c kitchen for £5.50/hour makes waitering look like a walk in the park.
I know plenty of people who rather deal with the heat than the customers. Is 9 hours a long shift then?
I do understand your point though, I worked in kitchens in Spain in extreme heat. The days were somewhat longer than 9 hours thou, closer to 14-15, mornings and nights!