As its a double meeting, with Saturday and Sunday counting as a round each, there will be practice etc. on both days. Practice should start around nine, with actual racing will probably start around ten. The SuperMono's race is usually the first race after lunch, so about one-ish.
I suspect the paddock will be very full but look out for a faded white and red ambulance (Andy Duncan) which is often parked near to a white Peugeot camper (John Goode). If you keep your eyes peeled you may well spot their SRX's in front of their respective vehicles.
I'm also going over on Sunday morning so hopefully see you there!
Boyd