Is it just for in stock stuff?
It is only valid on the stuff in the "Seasons Savings" section, which is basically most of the in-stock stuff. Here are the details on the sale...
PREMIUM TERMS: 15% off select eligible products in the Season Savings Collection with code HOLIDAY15 beginning November 25, 2021 at 9AM ET through November 29, 2021 at 11:59PM ET (“Promotion”). Promotion valid for Hasbro Pulse Premium Member accounts only. Promotion applies to pre-tax and pre-shipping and handling amount. No rain checks. Not valid on previous orders. Cannot be combined with any other promotions or discounts. Promotion excludes special bundle deals, Hasbro Pulse Premium Membership fee, and HasLab campaigns. Valid while supplies last. Subject to HasbroPulse.com Terms of Use and policies. ©2021 Hasbro. All Rights Reserved.
NON-PREMIUM TERMS: 10% off select eligible products in the Season Savings Collection with code HOLIDAY10 beginning November 29, 2021 at 9AM ET through November 25, 2021 at 11:59PM ET (“Promotion”). Promotion applies to pre-tax and pre-shipping and handling amount. No rain checks. Not valid on previous orders. Cannot be combined with any other promotions or discounts. Excludes special bundle deals, Hasbro Pulse Premium Membership fee, and HasLab campaigns. Valid while supplies last. Subject to HasbroPulse.com Terms of Use and policies. ©2021 Hasbro. All Rights Reserved.