According to the MTA Weekender:
F Jamaica-bound trains run via the M from 47-50 Sts to Roosevelt AvThe Roosevelt Island Operating Corp (RIOC) adds:
Weekend, 9:45 PM Fri to 5 AM Mon, Jun 13 - 16
No Jamaica-bound service at 57 St, Lexington Av/63 St, Roosevelt Island and 21 St-Queensbridge.
The MTA has advised that from 9:45 PM Friday, June 13th to 5:00 AM Monday, June 16th, there will be no Queens-Bound F train service at the Roosevelt Island station. For service to Queens from Roosevelt Island, take the Q102 to Queens Plaza, E, M, R station where F train service is available, or, take the Manhattan- bound F train to 47-50th Sts. and transfer to a Queens bound F train. Please plan your travel accordingly and visit http://mta.info or call 511 for more information.
Roosevelt Island Operating Corp Advisories Group