You can design complex rules to offer discounts from series of (independant) suppliers!

Example: stay in hotel A and B and C for a number of predefined (Min/Max) nights and then calculate a discount of 10 % on all involved suppliers (either the cost, the sales or both). All done automatically in the background.

When the predefined rules are broken by changing the bookings, the discount is then automatically reversed and the discounts are not applied anymore!