Last on the Destiny I did the same itinerary.
I loved Old San Juan. The history, the massive castle-like forts, the ambiance of the old world which is more like Spain than Caribbean.
St Kitts and Antigua were my favorite islands, not that the others were that bad.
If one loves ports of call, this is THE cruise for you. If however, "fun days at sea" floats your boat, then book something else.