Equinox Spa question

[easy spirit]

Have sailed on Celebrity few times, but perhaps the Equinox has a different approach to my question.

On previous cruises I have purchase on embarkation day a "Spa Package" that includes unlimited use of the Spa facilities, such as the talassotherapy pool, sauna, indoor whirpool, heated benches etc. without having to book any spa treatments. I know if you book one of them, you can enjoy those facilities within a specific time frame of your appointment.

I'm also aware that the guests staying on the Acqua class cabins enjoys these amenities on a "complimentary basis" (well... that's included on their fare). On this particular cruise the difference in price between Acqua & Concierge cabins were double. So it was no cost effective to book an acqua class just to enjoy those spa perks & dining at Blu, among other things.