I'll start by saying that yes, I would recommend this marathon, but only if you know what you're getting into. ODM used to be a point to point race run from Cape May to Sea Isle City. After a few years of runners complaining about the nonstop headwind, the race decided to make it an out and back course starting and ending in Sea Isle City. I can't speak to the original course, but based on over half of this event, I can imagine it was even more of a meat grinder then! Pros and cons:

Pros: Well organized and well marked course; turns obviously marked with signs and cones.
Aid stations every 2.5 miles - decent given it's generally cool this time of year.
Some nice scenery; you run the boardwalk towards the end and the bridges have nice views, but you're also in a lot of neighborhoods.
Great shirt, decent medal, nice AG award.
Race day bib pick up if needed.
Warm tent for awards and food after the race, good options (pastries, sandwiches, broth, coffee, water, and other items).
Instant results.
Nice size event; there is no half, it's a marathon and a 10 miler.

Cons: not a lot of communication - one email after registering, one after they decided to change the course, nothing leading up to the race.
Expo was hard to find, just need to narrow down its location within the conference center (venue personnel there were not helpful until someone showed up who knew where the race expo was).
Plastic cups instead of paper made it difficult to drink on the move without sloshing water or Gatorade all over yourself. Paper lets you pinch the top together to sip more easily while running.
WIND WIND WIND. Since they changed the course, there were a few isolated spots that had a nice tailwind so the first half felt pretty fast. As soon as you round the cone at the halfway point, it's a vicious headwind the entire way back. I was somewhat mentally prepared based on previous years' reviews but it's still like running into a wall.

The location itself was pleasant; nice little restaurants, inns, and local flavor in Sea Isle city. I would have preferred a little bit more communication leading up to the race, but it worked out just fine. I don't have plans to run this race again, it was to cross off New Jersey, but I'm glad I ran it. I felt like I accomplished something more than the usual sense of accomplishment after finishing a marathon. This was number 47 and it was one of the toughest but I was proud of my time and the struggle made it more meaningful. If you are looking for something similar, I'd recommend it. If you're looking for big crowds, lots of on course support, and an easy day, probably not your cup of tea.