According to the MTA Weekender:
F Jamaica-bound trains run via the M from 47-50 Sts to Roosevelt Av
Weekend, 10 PM Fri to 5 AM Mon, Aug 17 – 20
Trains run express from Queens Plaza to Roosevelt Av.
No Jamaica-bound service at 57 St, Lexington Av/63 St, Roosevelt Island and 21 St-Queensbridge.
No word from Roosevelt Island Operating Corp ( RIOC ) whether both Tram Cabins will be operating this weekend during the F Train subway service disruption.