it was worth it to me - if only to do a few laps in the 2014 R8 on the PBIR short course
also took the S8 on city streets, auto-x the S5 and TTS, drive the S7 and S5 and shoot the breeze with their pro drivers. definitely disappointed the RS models were not there, and the S4/S5 is a clear step below the M3 IMO
but the R8...holy shit!