JFK Desks: opening times

Evening all.

We are catching the 18.30 departure from JFK to LHR in the next few days and wondered what time the desks opened in Departures? Ours is the first evening flight. Accommodation check out is at 12 pm and we don't particularly wish to venture off anywhere before heading to JFK, but again don't want to be at JFK and find the desks and Clubhouse are closed.

Thanks.

Website says check-in opens 2.15, Clubhouse 2.30.

Many thanks.