Cruises can be a little too public for me.
We went to Curacao on our honeymoon and had fun, they have a very cute downtown that looks like the netherlands. That was late April, hot, but plenty of shade at the places we went. Food was pretty terrible everywhere, as they have like, zero local resources and it all comes from Venezuela.
We had a vacation last year to Tulum in Mexico with the opening of Southwest flights to Cancun. We rented a car and its like one road you drive on for 2.5 hrs. Stayed at a bed and breakfast that was actually owned by the couple that opened the Matchbox and Silver Palm.
That was our favorite vacation. Intimate as you want, lots of great food and drinks. Lots of beach clubs where even if you were not at a beach hotel you can go there and get towels/drinks.
It will be fun no matter what you do though. It's a wonderful slice of time.