Didn't know that. Wouldn't people get sick?
If nobody opens the freezer doors, things will stay frozen for a long time. The freezers are insulated.
If these are the freezers with glass doors that you can see through, well, they're certainly not well insulated.
I have noticed that lots of fresh cans of sodas are no longer very bubbly. Putting it out in heat makes sense considering how hot HK is. Another excuse to drink less of that stuff though since it's not good for you anyway.