You are worried about a few hours on the porch? Think how many were spent inside that big brwn box on wheels. I gotten deliveries that were hot to the touch as I signed for them.

I would never order film except in late fall to early spring, spring being best as all the stuff delivered to the store in summer is sold before yours arrives at the store.

But then I am paranoid.

You may have deliveries made to the local UPS distribution center and held will call.
Mine go the a local UPS Store. They take in merchandice, sign for it, and call me. You must make these arrangments with each individual store. All valuable shipment go to the UPS Store and never sit on my porch.