According to the MTA, the E train replaces the F train for Roosevelt Island subway service to and
from Manhattan this weekend and upcoming weekends thru March 29: 

TUNNEL REHABILITATION Fri 9:45 PM to Mon 5 AM* until Mar 29. F Trains are
replaced by the E between 21 St-Queensbridge and Delancey St-Essex St

Our Rutgers Tunnel work continues! Here’s a snapshot of some work we’ve done so far:

Replaced 9,270 linear feet (LF) of rails
Installed 9,300 LF of temporary tunnel lighting
Began replacing track ties, plates, and third rail equipment

Learn more: https://t.co/52y8ADvf25 pic.twitter.com/r0xmIxWHZ4

— MTA. Wear a Mask. Stop the Spread. (@MTA) February 19, 2021

The Roosevelt Island Operating Corp (RIOC) adds:

While we continue to follow social distancing and align our operations with
New York Forward guidance, we also continue to incrementally increase the
number of passengers permitted on the Tram. Tram capacity will increase on
Sunday, November 1st, from 20 to 35 passengers per cabin, and we will
continue to assess and gradually increase in phases. 

We understand the need for this mode of transportation, however, the health
and safety of our riders and operators are our priority. We appreciate your
cooperation.

Here’s the
NYC Ferry Roosevelt Island Astoria Route Schedule
which extends to East 90th street on the Upper East Side. 

And Roosevelt Island
Citbike docking stations.