Yes Newark is always busy...
The security was fast ,so many toilet U could ask the stuff is very friendly
Yes. Very very busy airport. Even finding toilets is hard.
I've always found it busy when I've used the airport but the queues move quickly.
Of course, like any airport, the TSA lines vary greatly according to the time of day, day of the week, which terminal you use, and staffing issues. If you don't travel often, just leave yourself enough time just in case you hit a peak hour. If you travel often I highly recommend getting TSA Pre or Clear. Both those prescreening options can save huge amounts of time.
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