I was staying in Boston at a full service Marriott for around $350/night, which resulted in about 15K points a week (M-TH). I am now in Palo Alto for my project and am paying about $50 more a night, but my total points earned for the week was about 7K. So, this got me wondering. How is the total points earned calculated (e.g., cost, chain, category, etc.)? And, what advice is there for getting the most bang for my bucks? Thanks for the help!