I sent a request to Princess in the beginning of July regarding bringing my "folding" bicycle on board. So far I did not get a reply either yah or nah so I decide to not press my luck and left the bike at home.
Now we are on the Royal Princess and just out of curiosity I asked at the service desk what they think of bringing a bicycle (folding or otherwise)on board. Their answer, after checking by phone probably with HO;
"As long as you are not planning to ride it on the ship you are good to go, NO objection".
Next time I will bring it.
Theo