Bring your sledge and eye ware. The Hastings' property quartz digs are 100 yd. The daily fee for lower impact collecting may still be only a dollar, paid at the house. I think that it's worth the price of admission just to see the pits and the labor involved. The seasonal people are generally quite pleasant despite being prone to back problems.
Heavy boots are in order because of the rubble.
There are no facilities. I've had very good luck at The Herkimer Diamond Development. There is also a KOA campground across the street. Next door the HDD is Ace of Diamonds, also good collecting. If your after Mud pockets HDD will be the place of choice, but be prepared to work hard for 2-3 days.