Just returned from HH for a four day weekend (18, 19, 20, 21)
During our stay the resort was at about 70% capacity. CM said Easter week is at 100% - "as it usually is."
I'd give them a call. However this year - they said - is expected to be packed because the PGA 's Heritage Golf Classic will be played at Harbour Town during that week.
As an aside, most of the buildings seemed to have a new coat of exterrior paint. They were actually working on Building 25 when we left. Looked like they were working there way sequentially to Building 30.