Pacific Pearl - Mini Suite - Bath Access

We are taking my elderly parents on the short cruise Syd-Syd on 4 April as my mother is worried about sea sickness. Now that we've booked the mini suite on Deck 11 she is concerned that the bath may be too difficult for them to step into for a shower. Can anyone kindly tell me how high the bath is and if they experienced or know of anyone experiencing difficulties? I've searched P&O's website and the forums but can't find an answer. Many thanks!

From memory its not a deep bath and there are grab rails.

Thank you - knowing there are grab rails is perfect as they are both in their 80s.