I watched it again yesterday, and I'm still trying to figure out exactly what was in the letter Fred gave to Archie and told him not to open in until 3 weeks later?

Was it his will? I know he had Archie designated as executor...Did he think he wasn't going to live much longer after he had that heart bypass procedure?

What did the 12:30 lunch date represent? I'm still lost after watching this like 3 times...