We're back and this is what we did. We stayed at the airport Ramada, printed boarding passes, dropped off our luggage at the airport about 3 hrs before the flight, went back to the Ramada for a leisurely complimentary breakfast, and then went to the airport about 2 hrs before the flight. Surprisingly no long lines. The Ramada was pricey but convenient. We did this twice...once for a domestic LAN flight and once for our international flight home to ORD via MIA. Thanks for everyone's help! BTW, Kuelap was my favorite day of the trip.