By any other city's standards, this park would probably get 2 or 3 stars at best. But for Vegas, it deserves at least a 4. It has green trees. It has water. It has ducks! You can't find any of those things very easily in Vegas, so for the novelty itself, it's worth a visit.
If you have kids, they'll love being able to run through actual grass, chasing ducks. Your dogs will love it too.
Go with some pretty low expectations and you might be surprised how much you enjoy Floyd Lamb.