we own in surf-side beach resort called Plantation Resort, Presidential Villa's section. This is a summer week that floats., We have been going to owners meeting 3rd fri in march and its nice. This year was cooler than 2013 but not bad.
Golf was good, did not get to pools. did see some folks swimming, hot tub was on and seemed to be the place to be. Lazy river is not heated so cold this time of year. You get more spring breakers from Central US it seems also the north east colleges but not issues with them.
Off season, before mid june and after labor day is best, especially after labor day. Warm sun, warm water, cold beers and little crowds during week , weekends are another story crowded fri noonish to sun noon.
there are resorts on beach and off beach. If you find something you like find TPU value at RCI's deposit calculator.. (login , click "home" tab click "deposit" look to right and click "deposit calculator") the new site is somewhat hard to navigate. If unit number not know use option 2 and select room size and just use one of the number that shows up..
you want your MF vs TPS to be 10-12 or so.. ie 34 tpu and 700 MF = 20.58 per tpu.. sorta high, but if you get say 84 with 700 MF = 8.33 per tpu much better.
good luck