I found this Rollercade Groupon by sorting under All Deals, then choosing the Events & Activities tab.
$12 will get you admission for two, skate rental passes plus two hot dogs (normally $28 if you paid at the door.)
Or if you have a family of four, snag the four-pack for $24 (normally $56 at the door!)
You can buy up to two Rollercade Groupons per account, plus an additional three to give as gifts. The Groupons must all be used by July 24, 2013.
Get your Rollercade passes here.
Get directions to the Rollercade here.