I've only done one track day, and their restrictions called it out like I mentioned. For all I know, that is the only club to have ever done that, but it made sense, so I assumed it was common practice
As long as the pads have enough life in them and the fluid isn't too old, the car will be fine (tires should be in good nick too). I would also have a tech inspection done by a qualified mechanic (which would include checking the brakes, and the condition of the suspension bushings, and tightening everything to spec). It's good peace of mind and most HPDEs require it.
05 Elise, ST, sports, touring, hardtop, DBA 4000 slotted discs, Ferodo DS2500 pads, Sector 111 gpan3, EP Tuning Quickrack, Pro Alloy rad, DS brace, HnT pad, front and rear tow hooks, CG lock, ORE double cup holder (caffeine for track); '86 911 Targa (sold); '68 MGB (being restored)