Hi,

I am a newbie here, so apologies if I'm posting in the wrong place or haven't been able to find existing threads that have addressed my query.

I may be traveling to Santiago, Chile on business later this year. My home airport is Newark.

I only need to spend a few hours in Santiago for business. The way the flights line up, I'm thinking it's possible to fly overnight, connecting via Miami or Dallas, arrive early morning, take care of my business meetings, then depart Santiago at 10 pm the same day, arriving back home around midday the next day. So, for example, leave Newark on a Tuesday night, arrive Santiago early morning Wednesday, spend the day in meetings then depart for home Wednesday night and arrive midday Thursday. No hotel stay.

The only obstacle as I can see it is whether I'll be able to access a shower at one of the lounges at the Santiago airport upon arrival. I'll be flying business class both ways, so am thinking that after I land and clear immigration, I could use the boarding pass for the 10 pm return flight to get through security and into the Admirals departure lounge, then head into central Santiago for meetings and back to the airport later that night for my return flight.

I'll check this with American as well but figured I might get a clearer and faster answer here. Is this doable? I've never been in a situation before in which I've gone through security, more than 12 hours before scheduled departure, spent a bit of time post-security, then left the airport and came back again on the same boarding pass closer to departure time. I'm mostly wondering whether there's some weird rule I'm unaware of regarding not being able to use the same boarding pass twice to get through security and to the gate (this strikes me as highly unlikely but worth checking nonetheless).

Thank you in advance for any thoughts!