Visited here last week, during the off-season so the bathrooms weren't open and there wasn't any staff available, but had a great time (until I got my motorized chair stuck in the sand, but that's my fault and I can't hold my carelessness against this place).
My mom, boyfriend and I brought some take-away to the park for lunch. There are several picnic tables available, on a concrete patio, overlooking the water. It was a perfect shaded spot, listening to the lapping of the water against the shore, watching a flock of geese feed in the distance on the water.
During the popular season it seems that you can rent kayaks, paddle boats, and jetskis. There's usually a lifeguard and some other stuff, but we visited in mid-September and on a Wednesday, so it was quiet.
My favorite thing ever though was that they have one of those mats that make it possible for wheelchair users to travel across the sand, and to the packed sand near the water. I have seen these in actual Miami, and Myrtle Beach but neither of those places actually took them seriously. The one in Coney Island was very close to the one I experienced in Middle River, the mat ends only feet from the water. If you're an able-bodied person, bless you, but you cannot understand the utmost delight in finding a place that remembers that people in wheelchairs exist, and also love to be near the water. It's absolutely wonderful to be remembered and accommodated.
Loved my afternoon here. Would recommend. read more