I dont think you will have any problem. When we were at CSS in Feb 2009, it seemed that one day nearly half of the male contingent at the resort went to Kingston for the day. I remember it well because they had wall to wall sunshine that day, whilst we had cloud and rain!
You can ask at the Tour Desk and they will arrange it for you- it will be cheaper if other people want to go. It's a couple of hours each way - and the ride is a little rocky at times - but don't miss the opportunity to go.