I do know that when there are cruise ships in port, the the trolley is typically running during the day.
here is the link to the cruise ship schedule and as of now it only goes thru january. http://www.arubaports.com/main/cruiseship-schedules/
you are heading to aruba in late february?
keep checking the schedule and when a cruise ship is in, chances are that trolley will be rolling.
Yeah one of our days it looks like there will be 3 ships in port so we'll give it a shot that day. She wants to ride it more than I do but being a reformed cruise fanatic I don't really mind the crowds. Not to mention I'll get to munch at lots of places we tend to miss. We don't usually get into Oranjestad much so I guess the trolley is as good an excuse as any.