According to the MTA , there will be Roosevelt Island F Train service

to and from Manhattan this weekend. And:
F Trains run local in both directions between 71 Av and 21 St-Queensbridge Weekends, 11:30 PM Fri to 5 AM Mon, until Aug 7
Trains stop at 67 Av, 63 Dr, Woodhaven Blvd, Grand, Elmhurst, Roosevelt Avs,
But:
F Jamaica-bound trains are rerouted via the after 47-50 Sts to Roosevelt Av Late Nights, 11:45 PM to 5 AM, Mon to Fri, Aug 7 – 11
No Jamaica-bound service at 57 St, Lexington Av/63 St, Roosevelt Island, and 21 St-Queensbridge.
