Just got a post card from them - they will refund any slot losses between $100-$100,000 in the month of July starting in August. The catch is that the refund is made over 20 weeks, and if you don't go there for any of those weeks you lose that portion.
Sounds like a great deal for local punters...
http://philadelphia.cbslocal.com/201...customer-base/
Also- they are matching slot dollar offers for July from other AC Casinos.