how is monday departures from aruba? do you still need 3 hours departure time?
I would say 2 1/2 hours to be on the safe side. We have always had a flight around 3:30 pm and have to check out of our room by Noon, so if we leave the resort at noon and figure in traffic getting to the airport, it all works out fine.
From my observations, Saturday is the busiest day by a fair amount. Sundays are the second busiest. Weekdays are less busy. Never less than two hours though, just to be on the safe side. Also leaves time for a pre-flight beer and sandwich.