Oh to have the bad ‘ol days back! 😜
Amazon is pretty good all around. Like others have said, check with the campground about deliveries first. If I had to depend on something being delivered, I’d find out where the nearest Amazon locker was so you know it is there when they deposit it (you get text or email) and then go drive and get it. Otherwise, you’re dealing with Murphy when you really have to have something.
Safe travels, all.