Fees yeah, initial fee is like 87 or something.
Retest 70something.
For the non bookings, if you want first in, get there really early.
I just got there about lunchtime, brought food drink and played games on my phone lol. (Waited 30-45mins-ish)
As for spotting it, I went to the Welshpool one and its next door to the licensing centre there - 4 big lanes with roofs over it so yeah, easy to spot