Talks will be held (tentatively) in McDonnell A01. You can get there be enterring Fine Hall and taking the stairs or elevator down one floor to the basement (floor A). Registration and refreshments are in the lobby outside McDonnel A01.
Train
Princeton Junction Station is served by New Jersey Transit and Amtrak. There is a small connector train ("Dinky") from Princeton Junction to the university; buses, taxis, and ride shares are also practical options from Princeton Junction.
Plane
The closest major airport is Newark (EWR), though Philadelphia (PHL) is also a reasonable option, and there may be flights to the small, local Trenton Mercer Airport. It is straightforward to get from Newark Airport to Princeton by train; getting to Princeton from Philadelphia Airport by train is also practical, but slightly more involved.