NWR: Looking for Halloween costume party weekend of 10/30 or 10/31 (x-post BHB)

Normally in the past, DH & I have always gone to Mirage or (now GLO) & their party has always been on a weekend day (Fri or Sat). For the first time this year it's on a Thurs & we are already going to a halloween benefit @ russo's on the bay. Since we dont live on LI anymore & live somewhat upstate it's hard to research anything going on down on LI as far as costume parties at clubs or restaurants either on the 30th or 31st...

We are looking to possibly do something both Fri 10/30 & Sat 10/31 so we can make a nice weekend out of our trip back to LI!

TIA for anyone who can help me/us!