No Roosevelt Island F Train service from Manhattan this weekend.

According to the MTA:

TRACK MAINTENANCE Until Dec 10, Weekends, 11:45 PM Fri to 5 AM Mon Jamaica-bound F trains are rerouted via the E after 47-50 Sts in Manhattan to Roosevelt Av in Queens

No Jamaica-bound service at Lexington Av/63 St, Roosevelt Island and 21 St-Queensbridge.

Travel Alternatives … To Roosevelt Island and 21 St-Queensbridge, take the F to Roosevelt Av and transfer to a Brooklyn-bound F. From these stations, take a Brooklyn-bound F to 47-50 Sts and transfer to a Jamaica-bound F….

And there will be Manhattan Bound R Train service from Roosevelt Island this weekend:

Bay Ridge-bound R trains are rerouted after 36 St, Queens to 21 St-Queensbridge and run via the F to Lexington Av/63 St , resuming normal service at 57 St-7 Av.

Also:

… STATION ENHANCEMENTS | Until December 2018 57 St F Station is closed…

Both Tram Cabins operating at full capacity. There is Roosevelt Island ferry service on the Astoria Route. Here’s the new Winter Schedule for Roosevelt Island ferry service.