We highly suggest you fly into Newark Airport (EWR) as this airport is closest to the hotel. It is about a 40 minute car ride to the wedding venue and hotel (Bridgewater Marriott) and should cost anywhere between $50-80 in a Lyft or Uber!
LaGuardia Airport or JFK Airport:
If you fly into LaGuardia or JFK airports, your commute to the hotel will certainly be longer (expect about 2 hours by car and to pay about $175+ for uber or lyft).
NJ Transit from New York Penn Station:
If you are coming from New York City the easiest way will be a rental car or a Lyft or an Uber. But if you want to take public transit, that is an option (thought might be more timely).
Check google map for the day and time you hope to come and set Penn Station as your departure site and the Bridgewater Marriott as your destination. Depending on the day you will see different options for trains and buses.
Usually, the most direct option is taking a bus from Port Authority (Bus 114 to Bridgewater Commons). That bus takes you to the mall which is opposite the hotel venue, and takes about 2 hours total.
If you opt for a train, check the NJ Transit Schedule