I did this. Highly enjoyable race. Hillier than you'd think withmurder hill twice on the run course. Not sure what you want to know that you can't find on the website.
Smaller race on east coast of long island. Very little traffic and not a huge amount of spectators across the whole course but friendly atmosphere. One of the first times I enjoyed hanging around after the race chatting to other racers.
Travel is pretty easy although a couple hours out of NYC. You can drive or get the train easy enough. If you get the train you'll need an insurance vard/permit from long island railroad company. Its 5 bucks and lasts forever. There is a restriction on number of bikes allowed on the trains but I've never seen it hit capacity.
Lits of accommodation as its a touristy area in the height of summer but is normally less busy at race weekend. You'll want to book ahead to get somewhere that is walking distance to the transition.
If I remember correctly you rack your bike on race morning (don't take my word on that) which I'm much happier with. Less stress than the 100 thinks IM make u do before getting to the start line.
Hope that helps