Every contract may be different, and not being aware of how the group rate was discussed/paid/set-up, etc can impact.

I just signed a contract with Marriott for a large event, and as the meeting organizer receive the 50k max, but also said we would negate all MR points for our guest rooms if they provide to me 8 Platinum status levels to hand out at our discretion, comp our staff rooms, and provide staff all suite upgrades. This would mean that our guest rooms, regardless if they put their MR# into the reservation, and also opt to pay for their guest room via their own credit card, will receive points for the guest room.

The terms in the contract and on the rate indicate they don't. You would have to find out the details of the rate code and what the group discussed with them. It could go either way (last contract I signed, if master bill, guest doesn't receive points, if they pay personally and use group rate, they could receive points. This was because we didn't opt for "concessions.")