If you are worried about it...
Freeze some of those freezer paks, the kind you put in coolers - the bigger the better, and put them in the FRIDGE and freezer to keep all of it colder.
Put some ice cubes in a plastic container and set in the freezer, if the ice cubes are not square (or are floating in water), even if they refreeze,depending on whether they melted completely or just a bit, you'll know things got too warm.
Kathy