Thanks guys. The ambiguity is exactly why I was confused. It makes sense that generally selecting a room rate that doesn't include breakfast is the way to go, but since this one specifically said "no breakfast", I didn't know whether it meant.

1. Rates normally include breakfast, and this is offered at a discount specifically because it doesn't. HH benefits still apply.
2. No breakfast under any circumstances - benefits or not.

I thought the wording was particularly odd - especially, as Baze said, because it's a HH member rate.

HH staff confirmed the benefits should still apply, but that wording seems particularly open to interpretation so I guess I'll find out on the day!