My brother visited me one time and stayed at the local Marriott for free, then up to Portland, ME for free, Boston for free and Newport, RI for free. He flew roundtrip on AA for free and his rental car was free.
In that first few years of his job he visited every state except Hawaii and North Dakota. He even went to San Juan, PR once for a week.
He was a bank mortgage auditor for Fannie Mae.
When I left my job at a large bank, traveling about 85-100 nights a year...I had about 750,000 Marriott points. It look me almost 15 years to go through them all. It was great.