Originally posted by Goofyposter
absolutely. We do this every weekend. I use Amex, and by the time my nephew is old enough to go to WDW,we'll have enough points to pay the air for 10 people ..... and at the current rate of acquisition...we may own the Grand Floridian by then too!
Don't laugh, but I have managed to rack up over 200,000 membership miles (Amex), 30,000 delta skymiles, 40,000 starwood, 30,000 United airlines, using my credit cards (and I don't own a business, nor do I travel for business all that much). It's mostly personal spending, putting everything possible on the credit cards.
I currently have over 300,000 UA miles, 188,000 delta miles, 80,000 starwood points, 187,000 Hilton Honors, 45,000 Amex miles (to add to my delta miles), and 48,000 Marriott points. I could do a very nice vacation with all I have saved in these points, but of course cash is better.
One idea that I have posted on this board, was for people saving their coins, instead of putting it into a savings account, it might be worth it to buy US savings bond (using your point earning credit cards

).
Take care.