It will be no problem. Once you are all in the CCR, you're in. The spa is only about 3m from the entrance to the CCR anyway. You and your fiancé should enjoy the spa together. Although you may not be very "together". It's not one of those spas with a 'couples' facility. You will be separated and your timings may - even if booked to be the same - turn out to be slightly staggered.