I've lived in Hollywood 7 years and since the park was completed in 2007 it has been a wonderful focal point for the eclectic downtown area. Minutes from the best beach in S Florida and great restaurants right there. It is really gorgeously designed from the layout and landscaping to the water features, play areas, paths, and buildings.
The Grove of trees and bamboo is great for picnics. There is a huge children's play area that's always full of families.
The city has very regular events and music every Friday night and many other days. Monday nights are a smorgasbord of gourmet food trucks from 5-10 (mostly 6-9:30) that stage along the sidewalks with music and draws a huge crowd.
There is also a huge glass blowing studio they open to the public to watch at most every event.