Got given one of these “experiences” a few years back.
You’ll likely have 3 laps/car – an out lap, a full lap and an in lap (the place I was at – an airfield was sub minute laps with 3 corners). The instructor will tell you when to change gear, when to accelerate, when to brake. Its very production line, and they’ll punt you out if you break the rules. I got proper shouted at for changing gear without a prompt.
Driving on a track feels very different to driving on a road and I kinda wasted the first car getting to grips with the slightly alien environment. Getting in someone else’s expensive (paddleshift which I’d not used before) car and immediately thrashing the knackers off it doesn’t come especially easy.
I had an Aston DB9 (meh), a Ferrari F430 (nicest of the 3) and a Lamborghini Gallardo (most bonkers, but a very clunky gearbox). The interesting/exciting one in the slightly damp conditions looked like to be the Ariel Atom.