We're arriving at GRU 11:30 PM off AA and connecting on TAM to EZE at 8:30 AM. Rather than entering Brazil (big visa cost) and spending money on a hotel room that we won't get much use of, we're planning on just hanging out at the airport. In J on both legs so we can use the Admirals Club until it closes at 1:30 AM, then the TAM lounge that opens at 6.

Any suggestions for what to do for the 4 1/2 hours between? I think the TAM lounge is in a different terminal and I believe we can walk between them airside, but what would experienced travelers through GRU do with the extra time? Thanks.