It's a huge open space, great for family outings. The park frequently hosts concerts such as Octokerfest, and family events such as Holiday Boat Parade. The park also does fireworks for holiday such as Independence Day and NYE. Tons of people playing Pokémon Go, and there are also boat rentals.
There is parking across the street in a garage, but there is also public parking (but I don't know how to get there!)