It is my understanding that you can get more marriott points by using a marriott credit card but I will not be able to do that. It got me wondering if there is a better way on each stay to earn marriott points. I will not have the advantage of having a marriott rewards credit card to bump up the bonus points.

Of course I know when promotions runs to take advantage of those but for the person who travels 2 to 4 times a week and stays in one of the marriott hotels, is there a way to accumulate bonus points up and above the normal marrriott hotel rate since i will not have the added advantage of having a marriott rewards credit card?

Other companies let you get points for dining, shopping on line, etc and I was wondering what other ways can I earn points faster with Marriott so I can build up to 7 free nights at a high level hotel.