sponica nailed that one week. MA schools have vacation week the 3rd week in April which is packed every year, done it many times. In 2023 we actually flew from NYC because the flights from MA, NY, CT and RI were so outrageous from so many people from New England going to FL. Next year it overlaps with Easter which to me seems like the perfect storm of crowds. My tip, if you can push to the first week in May you'll encounter much smaller crowds.