Diabetes meter strips and a hot RV

There are different types of testing strip/meters. It sounds like yours is the type that need a solution to test the meter? We have the type that doesn't need the solution, just insert the strip & away you go. If it's that hot out, then just carry all of your equipment in an insulated lunch bag as was shown, with a small dry ice block. That should be good for at least 4 hours. The plastic bottle that our test strips come in is a tight-sealing plastic one, so moisture getting in isn't a problem. We also keep our insulin in the frige when camping, but it came survive a bit outside of it. Just keep it down low & in a cupboard! (hot air rises)