You might want to think about Priority Pass
If you are in GRU and/or GIG several times a year, it may be worth it to you (not to mention access to 600+ lounges worldwide).
In GIG you have access to TAM VIP Lounge - and in GRU (in addition to RCC) you get TAM and AA access. Also - priority pass cares not what airline you are flying.....
I am *G but have a membership as a back-up and it has come in VERY handy on occassion, very worth it IMHO.
check out prioritypass.com
Grunion