Hyatt has big time bonuses, but I believe it is only if you get the group to stay overnight too. Naturally, you would get Hyatt points for the charges and your points for any affinity card. If you get the gift certificates from Hyatt in advance (program expires 8/31 for the bonus purchases but certificates are good for a year), you can use them, get 5 points per dollar purchased and still get points for the expenditure for the meeting room, food etc. If the meeting is large enough, I would call the GM and ask him /her how to maximize your points with such a stay. Same goes with any other hotels. They may "make you a deal"