I've never waited for my credit card bill to arrive to pay. I just estimate how much I spend and pay a bit more within a week of the expenditure to avoid getting hit with the interests.
I did a quick search and it seems like there's nothing wrong with over paying a little bit but then I thought what if you take it to the extreme? such as transferring to large amount onto your credit card to buy something a lot more than your credit limit?
Are there any consequences in doing that? such as "you'll only earn points if you use the bank's money"?