Story from about 10 years ago:
I was at
Disneyland on a nice, warm day. I left my jacket at the hotel because I didn't want to carry it around the park all day, and besides it was way too warm for a jacket.
Until the sun went down.
Now coming from the prairies I'm used to a nice, gradual sunset and cooling. Not in CA. The sun was there, and then before I knew it, it had set. I swear you could go into a ride with the sun shining, come out and it would have set. And while the day was really, really warm the evening was very cool.
I, of course, was too stubborn to go back to the hotel for the jacket. Instead I finally decided to buy a really nice fleecy sweatshirt that I'd had my eye on for a few days. It was $55 and I'd been debating about it. I really wanted it, and being so cool was just the impetus needed.
Oddly enough I did the same thing a few years earlier
I still have both sweatshirts.
So forgetting to take one to the park can have advantages!