Long time lurker, looking for information and I know this is the place to get it from.

I have a BA Holiday booking for Ncl-lhr 1 night at a Bath Rd Hotel then 2 weeks later a flight from Rome to ncl via lhr. If I don't stay at the Heathrow Hotel after the 1st ncl - lhr flight will the return flights 2 weeks later still be O.K.for me to fly or will they be cancelled as I didn't use the hotel.
Thanks for your help