to be on the safe side I would travel with 1 piece of < 23kg and (if I need to do shopping) plan for 30 on the return (possibly with a bag like the samsonite tote-a-ton that I can take in my main bag on the outbound trip)

Also you can see if qr website recognises your PNR in manage my booking - if so, the purchase excess baggage link (if it appears) might give an additional confirmation of your allowance.