Players can read the terms before claiming, just 99% don’t read the terms and it’s usually the bonus hunters that read it. For all promotions you can find out what your wagering status is in the cashier at any time. Another option is to go to livechat and ask. The wagering on the $15 ND isn’t that high to begin with so there are usually no complaints and I don’t think this hurts the acquisition rate.
It’s midnight and there’s lots of comments here. I’m on the road tomorrow driving from Ottawa back to Toronto so I’ll be able to add more comments to this discussion possibly tomorrow night. If everyone wants, I can share some of the data I have collected over the past year, my results with and without the ND bonus and the various T&C changes I have experimented with and my POV on gaming companies using freebies and the pros and cons for them.
Regarding the $15 ND, it has a max cashout of 10x the bonus and can be played on slots (all except progressives), keno and scratchcards. Any play on blackjack and videopoker will void the cashin.