Oh no! I didn't mean to worry anyone - we allergy folks have enough to worry about

. There has been some discussions on the disabilities DIS board as well as some other allergy boards I read and it seems like people vary quite a bit in what they do.
It seemed like people who knew they would be in and out of the sun just carried it as they normally did. Others carried it in an insulated lunch bag or baby bottle holder with or without a cold pack. People seemed to use the cold pack when they knew they would be out in the HOT sun for a long period of time either at a beach or water park, etc.
I hope that helps! This discussion has helped me. I have decided not to "sweat" (pun intended

) not having a fridge at Pop and just making do with a cooler that we either buy from a grocery service or bring on the airplane with us.
Thanks again DISers for the useful dialogue.