My folks live in Wildwood, NJ full time so I'm down there quite often. As a matter of fact, I prefer the island off-season rather than on, and I always spending Christmas there.
A lot of people have experienced Wildwood (or any Jersey Shore town, really) in the summer but if you been off season, you know how it turns into a really quiet small town with an almost eerie, ghostly feel to it. Other than the fact that the coasters don't run, this is my favorite time to be there.
Over this past Christmas holiday I took an afternoon bike ride up to the boards - that's boardwalk for you non-locals - and snapped some coaster porn as an enormous, menacing storm crept up the coast and right toward me. I got stuck in it and had to hide under a storefront for a half hour.