Originally Posted by
Lovethecabin
... We are flying in first to Cancun with a long layover in CLT on the return. ... We will be able to use the lounge as ticketed first class passengers to/from Mexico?
Unfortunately, no for Cancun (yes for Mexico City) for pax without Emerald/Sapphire status. It's the first exception listed in the link from post 4: (emphasis mine)
The following exceptions apply:
1. First and Business Class customers who do not hold Emerald or Sapphire tier status are not eligible to access American Airlines or US Airways lounges when travelling on solely domestic flights within the U.S. or between the U.S. and Canada, Mexico [except Mexico City], the Bahamas, Bermuda and the Caribbean; customers travelling in First or Business class on U.S. transcontinental flights between JFK-LAX, JFK-SFO and MIA-LAX (and vice-versa) are eligible for lounge access.