Hi mate
I like the circuit...its kind of a love it or hate it kind of track. Some go once and say never again, others love it.
Its short(ish) and all corners...no real straight to talk of...and a great series of left handers towards the end of the lap.
Give it a go and then you know for next time.
As for discount, as far as I'm aware we get 10% with No Limits, but not sure how it works with groups? Probably best to drop WJB a u2u and test the water
Have fun!