We have attended a couple of the big Sunday Parades. Unless you have a spot/stand to go to to it is very crowded and you are not part of it. I does not arrive down town until about 3:00pm or later and they have had a LOT to drink by then. You will want chairs and a cooler make things go better.
on or one day on the island we did a jeep tour using abc-jeeps.
We saw everything we needed to--have no desires now to see out and see it again. Now we spend the rest of the time--sitting out and relaxing.
The tour was great.