Yes, you will be able to register the guests from both those rooms you booked.
Not sure if this matters in your case, but is a weird detail that is super important for some: Many members have blue card and also own newer resale points. Bookings on either can qualify. The IMPORTANT part is if you, as the blue card holder, have your personal reservation booked on your resale, that is the contract number you MUST use during the automated registration process. Unfortunately people have missed out due to this. If you use a contract number other than the one you are personally staying, the system will not recognize you qualify.