Like I said, service to and from Jamaica Center seems to be unaffected, based on how this service advisory is worded. If it was affected, the advisory would read something like "Trains run every [X] minutes between [briarwood] Van Wyck Blvd and Jamaica Center." Instead, it reads as such: "Additional service operates between World Trade Center and [briarwood] Van Wyck Blvd." There will be additional service on the E-line for those two weekends, not less. It's just that those added trains will run to 179 St instead of Jamaica Center.