Leaving Aruba last june (wife owns a piece of a hotel there, so "business trip") we were advised by the airline (SW) to be at the airport 4 hours before departure since it was a Sat, having done this trip frequently but never on a Sat we did get there 4 hours early. We breezed thru the Aruba departure, entered the US preclearance side and were sipping a cocktail in minutes. It used to really suck but we did C+I at a machine being guided by an agent. If SXM does it right it could be wonderful, lets hope they learn from down island. BTW, I was over served at the bar and slept the whole way home, another huge plus.We carry on so that surely saved some time but it sure beat JFK when we lived in NY.