The expo is being held at the Hilton Long Island in Melville.  While the Hilton does offer a limited number of rooms discounted from their "rack" rate, better deals can often be found at various travel discount web sites.  The following link at trip advisor allows you to do an easy comparison search of multiple web sites for the Hilton for the day entered:   http://www.tripadvisor.com/Hotel_Review-g48152-d93222-Reviews-Hilton_Long_Island_Huntington-Melville_New_York.html  

If you wish to call the hotel directly, their number is 631 845-1000

Another option is the Extended Stay America Hotel, which is next door to the Hilton.  Their number is 631 777-3999  

Please use discretion with your herps in the hotels!