rolling in fitness gyms in LI

Are there any particular fitness gyms (read: non-martial art gyms) in the Long Island area that don't perturb open mat sessions? My current gym membership is coming too a close soon and I want to join a new gym, and I've heard through the grapevine that grapplers have open mat sessions at regular fitness gyms, outside of their martial art schools. If I can find a fitness gym that doesn't frown upon open mat sessions, that'd be great.

Thank you in advance.