As others have noted, the fare class itself or even whether a fare is published/unpublished does not determine mileage accrual. For what it's worth, the following fares do not accrue miles:

- Priceline/Hotwire fares
- Travel industry fares for travel agents' use (usually booked in G class)
- Certain companion fares (usually the paying passenger accrues miles and the free companion does not). I am not sure if Ameniti is one of those programs that would fall in this category. Can someone comment?

Moreover, Priceline/Hotwire fares are not in any particular fare class. They are simply just different fares distributed to these internet channels. They are likely in one of the regular booking classes in which you will see both other published and unpublished fares.