I've had experience of the AA CLT main (C gate iirc) AC over the past few months. The basic house wine, beer, spirts etc definitely free (and there was a busy queue and while there was a tip jar, there was no indication or pressure to tip, in fact they were getting through people on one occasion as fast as possible it somehow would have not worked somehow unless you were one of the bar flies, or buying a coughtail or "premium" beverage imo. Snacks were OK but not to a QC level )note all those people who whine about the domestic QC's) but not terrible - fruit, cookies, some chocolate brownies I may have eaten too many of lol, the salty snack mix/pretzel things, an fresh guac station in afternoons were popular(not my cup of terrible coffee).. soft drinks via those 50 bazillion flavour fancy machines, plus coffee, tea etc. Is it great? nope. Is it terrible? also no. I had to spend one layover of 4 hours there, and that tested me a bit (but had lunch at chick-fil-a out in the food court anyway) but was fine - if crowded at peak times - for charging points, drinks (alc or not) and light bites.
Of course, DFW flagship is lightyears ahead of this in many respects, but of course that's a different level of lounge (and lucky as OWE we can access before even dom AA/AS flights).
the US legacy airline lounges have usually been pretty low standard compared to what we've been used to with QC's, Korus and so on in our part of the world being quite a deal better, but the AA lounges I've visited (and yes I remember the PHX lounges too) have improved somewhat over the years.
Just need to go in with appropriate expectations imo.