This one I can answer. The Amans typically don't offer discounts except for a few like Amanpulo that offer discounts to Filipinos to encourage people in their own country to take advantage of the resort.

Other guests pay a full rate but the Aman packages can be an incredibly good value when they start throwing in things like meals, activities, upgrades, etc. Work with a Virtuoso agent and you can sometimes get more thrown in.