I'll try to keep it brief since most of the information is already out there.
Leave 207 Yd at 9:15 for 72nd Street Spur. Board "guests" at 10:30 at 59th Street middle.
Via D (6th Ave) line to DeKalb.
Via R line to 95th Street.
Via R to north of 36th Street/Fourth Ave, change ends.
Via D (West End) to Stillwell, then Brighton Line to Brighton Beach, and lunch.
Via Q line to DeKalb.
Via D line to 205th Street, change ends, into Concourse Yard.
Leave Concourse Yard, via D and E lines to WTC and terminate.
Only have the Saturday GO right now. Mail takes longer to reach this location.