FWIW, I can report there's a Diners lounge in BOG, too, but landside outside immigration, security, etc.
On my recent TACA flights in the back (I've only every redeemed for Y except once) the service mirrored T4F's observations: lots of smiles, but not much else. Pretty sad.
My experience on multiple levels is that AA has a certain snob appeal-- actual service notwithstanding-- and that TA is they're trying to emulate the US majors by mirroring AA despite its decline in service. The reality is a 5 hour TACA SAL--LAX generates more revenue than a similar 5 hour IAD-LAX AFAIK, and with SAL based crews, I'd imagine costs are much lower, too, so there's little excuse to cut food, pillows and blankets on these international flights. Just my $.02.
EastBay1K, I don't think I'd be capable of handling the Lan F service you rave about.

I think I've been too conditioned.