Hi Watermelon
I would guess public transport use for BN Centre would be effectively zero.
Free / secure parking for your car, motorbike or bicycle and once you've finished you shift (at whatever time of the day or night that ends up to be) you just walk for 2 minutes and you're away.
There is a pathway way to get into the parking area thence into the station - takes probably 10 mins to walk it.
My advice - go with the 4 or 2 wheel options.
Mozz