I've been Diamond for the last 10 years. The first 7 of those years my company allowed me to stay at full-service Hilton properties, so I easily spent $12K - $15K per year. However, I now work for a new company and I primarily stay at HI and HGI, thus I rarely spend $7K per year. My average hotel bill is normally under $140.00 at a rate of 45 nights per year.