I was able to receive the exact language of the company policy from American Airlines today via Twitter regarding PDB's. I was actually quite impressed they followed up with me regarding a conversation that started a few days ago. I also received a nice note from Hector Adler who I also reached out to who said that pre-departure services were discussed at great length at a meeting late last week. Let's hope things begin to improve and if not we continue to press the FA's to follow company policy.

See below AA policy regarding PDB

Pre-departure beverages are expected to be offered on all flights. On domestic flights, customers should be offered a beverage of choice. On international flights with bonded liquor, we offer a choice of orange juice, water, sparkling water, sparkling wine and mimosas and will fulfill requests for non alcoholic beverages of choice provided that supplies can be obtained without opening bonded carts and carriers. If pre-departure beverages cannot be served because of operational reasons, flight attendants are expected to apologize to customers and advise that beverages will be served as soon as possible after take off.

So there you have it.