Interesting point of view but it seems like the opposite to me. The reason we remember and recollect these "type 2 fun" events is that they generally did not go

Interesting point of view but it seems like the opposite to me. The reason we remember and recollect these "type 2 fun" events is that they generally did not go as expected. When you go to the beach, swim, have a beer and go out to dinner, etc., the day was enjoyable but also went exactly as planned. In 5 years, you are unlikely to remember any details of this day. If you had the same plan on an unusually warm day in November and then the weather changed on a dime and starting hailing, you will definitely remember that in 5 years and maybe longer. It also is a lesson that you should remember, that going to the beach in late fall might go badly.