That I don’t know. I typically use it for evening events. It does have 1500 spaces though, but if it’s too full on a weekday, you can also try the Vince Lombardi P&R on 95 with another 1000 spaces. That one’s similar in its usage and restrictions, only real differences are that the bus schedule is only weekdays, have more limited running hours 6:15a-11:30p, but is marginally cheaper: $9.75 for one car + driver RT, $4 for additional passenger RT.

https://content.njtransit.com/pdf/schedules/bus/321

Go a couple times on different days and you’ll quickly get the feel for how full it is usually.