From the affiliate area:

Blackjack is now available on PartyPoker.com. Your players will be able to play Poker and Blackjack at the same time, using the same account. They will also be able to place Side Bets on the outcome of the flop on real money tables.

Revenue from bets against the house, i.e. Black Jack, Side Bets etc, ("House Win Games") will be shown separately in your Affiliate Stats as ‘House Win Revenue’.

You will receive 20% of House Win Revenue* for your players for all your MGR trackers. You will be able to see the House Win Revenue from your players against each tracker.

*House Win Revenue is calculated as Standard house win rates (%) times Value of wagers by your players ($).

This means there will be no negative accruals for House Win Games.
Please contact your Account Manager or write to us at affiliates@partypoker.com if you have any queries on the applicable standard house win rates.