Hey fellow NY'er!
I just booked my week at HH in a 2BR as well for the week before Easter;(8 Nights

) my sister and family did the same. This will be our second Easter at HH, we were also there in 2004. There are lots of activities for both kids and adults, they offer (or at least they did in '04) a fully prepared Easter dinner that they will deliver to your villa, the weather is GREAT in April in HH. Kids and DH swam daily in the ocean (about 68 - 70 degrees, which is the warmest it gets here in NY for us anyway) The resort will be full during this week, but HH never feels crowded to us. Because you can use the pool at the resort and at the beach house, it seems like people are spread out. My kids love HH as much as WDW!! It's all of the Disney Magic without the theme park craziness!!!
Are you all flying down or driving? We've always driven (this will be our 4th HH trip) but this year we are flying from LI to Jacksonville, FL and renting a car. With the price of gas it's actually about the same to fly for us and we can spend more time vacationing instead of driving.